Tahltech Drilling, TNDC’s partnership with Geotech Drilling Services, is working on its first drilling services contract in Tahltan territory, on Imperial Metals’ Red Chris property. Tahltech is providing hydrogeological and geological drilling services, using sonic drilling methods.
Russ Prevett, Geotech’s project manager overseeing the program, shares insight, “The drilling program is providing geologists with soil cores of the overburden soils, and also facilitating the installation of wells, to allow long term environmental monitoring of groundwater around the mine site and its facilities.”
The short-term contract, estimated at 1.5 months, is running on a single shift with a continual crew of three people, working on rotations. Although the short-turnaround time and specialty type of drilling of this initial program didn’t allow time for hiring and training of Tahltan members, Geotech is committed to providing training and long-term employment opportunities for Tahltan members for future programs in the area, and throughout Canada.
TNDC CEO Peter Arendt reaffirms the commitment to ensure Tahltan members benefit from the partnership. “We are looking to foster careers by creating reliable and long-term employment and training opportunities for not only those Tahltans currently in the workforce, but those who will soon be entering the workforce.”
The maiden project demonstrates the advantage of the combined local expertise and strength of the two companies. The support of TNDC and the services it provides directly to the mine has been utilized by Tahltech Drilling, by way of heavy equipment and logistical support during the program.
Both TNDC and its partners are actively involved at Red Chris. TNDC provides road construction and maintenance, tailings impoundment area construction, and camp services. Its partners provide overburden and stripping, concentrate hauling to the Stewart port, and now drilling services. It’s an excellent example of the full-range of services that can be provided in collaboration to benefit the resource development and mining industry.
Peter adds the Tahltech partnership is focussed on the long-term. “With our commitment to the resource sector and continued exploration and development activity, we anticipate more contracts which will benefit TNDC, Geotech and the Tahltan Nation.”
Sodexo Canada has been a partner with TNDC since 2002, providing complete camp management through Spatsizi Remote Services. During this time we have worked on many projects, and employed many Tahltan members. It’s been very positive, and the business relationships have formed long lasting personal and business friendships.Ivor MacGregorVice President, Operations, Sodexo Canada Ltd.
I’ve worked in several areas during my 11+ years with TNDC, and it’s been a great company to work for. It is well run, well respected, and has played a vital role in the growth and stability of the Nation. It’s a great source of pride and resource for the Tahltan people, and I’m proud to be a part of it.Carol DanielsonAccounts Manager, TNDC
We established the Tahltan Macro Industries Joint Venture with TNDC in 2009. Macro is very satisfied with the relationship we have with TNDC. The company has a reputation of being a solid and reputable business corporation, that emphasizes value added partnerships and business developments. We look forward to working with TNDC in future opportunities.Darcy FriesenManager of Business Development & Special Projects, Macro Industries
We’ve had many projects in Tahltan territory through our Rescan Tahltan Environmental Consultants (RTEC) partnership, and the experience has been excellent. TNDC’s management team has been an honorable and knowledgeable group to work with. They always look at ways to make things work, and we have developed lasting friendships. It’s been an honour to work together.Clem Pelletierformer CEO, Rescan Group
We’ve completed a number of projects though our FrontierMEDEX Tahltan Ltd. partnership since we became a partner back in 2007. It’s been extremely positive. TNDC has been terrific to work with and we’re looking forward to continuing to build the business partnership.Ryan SteilPast General Manger, Canada, FrontierMEDEX Canada Ltd.
TNDC is successful because of the dedicated staff and skilled workers. The support of the Tahltan leaders and the TNDC board is crucial to the success of the company. Being President of TNDC has been the most rewarding job in my career. I look forward to my continuing involvement with all of the staff.Bill AdsitPast President, TNDC


August 02, 2022 07:50 ET | Source: Xanadu Mines Ltd. Xanadu Mines Ltd.
TORONTO, Aug. 02, 2022 (GLOBE NEWSWIRE) -- Xanadu Mines Ltd (ASX: XAM, TSX: XAM) (Xanadu or the Company) is pleased to update the market on its on-going metallurgical test program at the Kharmagtai Copper-Gold Project in the South Gobi region of Mongolia.
Xanadu’s Executive Chairman & Managing Director, Colin Moorhead said:
“These preliminary results are a very positive, first step as we test the uplift opportunities in the Kharmagtai Scoping Study. The base case assumed that all ore is processed through a standard sulphide circuit, which means that the partially oxidised material at the surface, which does not float, ends up being treated as zero value waste. If we can turn that material into cash generating ore by leaching with glycine and cyanide, it has potential to drive significant value uplift for the Kharmagtai project.”
Results from bottle roll tests at varying cyanide and glycine addition rates were conducted using 2.5 kilograms per tonne (kg/t) cyanide and 2.5kg/t glycine tests over a 48-hour conventional leach time, shown in Table 1.
Table 1: Gold, silver and copper recoveries at 2.5kg/t cyanide and 2.5kg/t glycine addition
These results demonstrate achievement of high gold recoveries at modest cyanide addition rates and in the presence of significant cyanide soluble copper. The coarse particle size indicates that heap leach treatment may be feasible.
Generally, gold leaching increases with decreasing particle size, providing a larger specific surface area for solution contact. Gold recoveries are expected to improve by grinding to 150 micrometre (µm) particle size, typically used for Carbon in Leach (CIL) processing.
Cyanide and glycine consumption was relatively low, indicating high potential for recovering and recycling of both reagents via the eventual optimal processing route. The addition of glycine reduced the cyanide consumption versus the cyanide consumption when leached using traditional cyanidation. Actual cyanide consumption rates ranged from 1.6kg/t to 2.1kg/t.
There is up to 90Mt of partially oxidised material at Kharmagtai, with 80% located near surface at Stockwork Hill, White Hill and Golden Eagle. If this material was processed as ore rather than pre-stripping, it could reduce waste rock production by approx. 10%.
The scope of the test program included head grade analysis and combined cyanide and glycine leach test work on four composite samples of previously untested, partially oxidised material from the upper 30m across the Kharmagtai mineralised system. The objective of the leach tests was to determine metallurgical recovery of gold and copper, and gauge potential of glycine addition to enhance recovery and reduce cyanide consumption. These results will inform future variability test work to evaluate an optimal processing route for this material.
Leaching with Glycine and Cyanide
Cyanide and glycine leaching was investigated on this partially oxidised material. Low cyanide addition, coupled with a glycine-dominant lixiviant, has many beneficial properties, particularly for leaching of precious metals with elevated copper content. This occurs due to copper preferentially bonding to glycine rather than cyanide, thus freeing the cyanide to leach gold.
Glycine is a widely available bulk reagent with characteristics favourable for use in mineralogical processing; non-toxic, water soluble, stable, non-volatile and can be recycled. Under alkaline conditions, glycine forms stable complexes with precious and base metals but not with iron, magnesium, or manganese.
Metallurgical test work was undertaken by Perth based Mining and Process Solutions (MPS), who hold the rights for leaching metals using glycine with cyanide.
Four composite samples were collected from Stockwork Hill, White Hill and Golden Eagle deposits at Kharmagtai project, as being representative of each of these zones. Samples were coarse rejects (P80>2mm particle size), consisting of mixed oxide and sulphide material taken from previously drilled diamond core holes. There is a risk that aged diamond core will deliver lower metallurgical recovery than test work on newly drilled material, due to post-drilling oxidation. Care was taken during sample selection to avoid those exhibiting evidence of post-drilling oxidation.
Sample preparation consisted of homogenising and splitting samples “as received” into their respective composites and labelling “Sample 1” through to “Sample 4”, with no further crushing or grinding. Each split was rotary split and homogenised for head analysis and sub-samples taken for test work. Head assays for Au, Silver (Ag) & Cu were conducted by fire assay for each sample. Prior to leach test work, samples were cured in 10k grams per tonne (g/t) sulfuric acid for 24 hours to improve copper extraction.
Metallurgical sample locations, zones and head assay grades are detailed in Table 2. Drill hole sample details are outlined in Table 3, and collar locations for drill holes sampled are outlined in Figure 1.
Table 2: Metallurgical sample details for partially oxidised test work program
Table 3: Drill hole sample details for partially oxidised test work program
1 Golden Eagle has 25m barren cover overlaying mineralisation, such that partially oxidised material commences at 25m true depth. 2 Sample true depth exceeds 30m for each of these drill holes given each deposit has a different depth from surface to base of oxidation.
Figure 1: Collar locations for drill holes sampled in metallurgical test work is available at https://www.globenewswire.com/NewsRoom/AttachmentNg/7b028c5c-740b-476d-baed-ac6a2a481bc9
Leaching of partially oxidised material will be further investigated as follows:
Partially oxidised material test work is a subset of the broader Kharmagtai metallurgical test work program. A comprehensive metallurgy program during the Pre-Feasibility Study over next 12 to 18 months will investigate flotation and comminution properties of the mineralisation and alteration styles at Kharmagtai, aiming to determine optimum flowsheet and generate inputs for engineering design. This will also generate data to inform the copper and gold recovery models, and allow operating costs estimates to be calculated. Concentrate samples will be generated for marketing studies as part of the broader metallurgy program.
Xanadu is an ASX and TSX listed Exploration company operating in Mongolia. We give investors exposure to globally significant, large-scale copper-gold discoveries and low-cost inventory growth. Xanadu maintains a portfolio of exploration projects and remains one of the few junior explorers on the ASX or TSX who control a globally significant copper-gold deposit in our flagship Kharmagtai project. For information on Xanadu visit: www.xanadumines.com.
Colin Moorhead Executive Chairman & Managing Director Xanadu Mines Ltd email@example.com +61 2 8280 7497
This Announcement was authorised for release by Xanadu’s Executive Chairman & Managing Director.
The information in this Announcement that relates to exploration results is based on information compiled by Dr Andrew Stewart, who is responsible for the exploration data, comments on exploration target sizes, QA/QC and geological interpretation and information. Dr Stewart, who is an employee of Xanadu and is a Member of the Australasian Institute of Geoscientists, has sufficient experience relevant to the style of mineralisation and type of deposit under consideration and to the activity he is undertaking to qualify as the “Competent Person” as defined in the 2012 Edition of the Australasian Code for Reporting Exploration Results, Mineral Resources and Ore Reserves and the National Instrument 43-101. Dr Stewart consents to the inclusion in the report of the matters based on this information in the form and context in which it appears.
The information in this Announcement that relates to metallurgy and metallurgical test work has been reviewed by Andrew Goulsbra, AusIMM, B.App Sci (Met). Mr Goulsbra is not an employee of the Company but is employed as a contract consultant. Mr Goulsbra is a member of the Australasian Institute of Mining and Metallurgy; he has sufficient experience with the style of processing response and type of deposit under consideration, and to the activities undertaken, to qualify as a competent as defined in the 2012 Edition of the Australasian Code for Reporting Exploration Results, Mineral Resources and Ore Reserves and the National Instrument 43-101. Mr Goulsbra consents to the inclusion in this report of the contained technical information in the form and context as it appears.
Certain statements contained in this Announcement, including information as to the future financial or operating performance of Xanadu and its projects may also include statements which are ‘forward‐looking statements’ that may include, amongst other things, statements regarding targets, estimates and assumptions in respect of mineral reserves and mineral resources and anticipated grades and recovery rates, production and prices, recovery costs and results, capital expenditures and are or may be based on assumptions and estimates related to future technical, economic, market, political, social and other conditions. These ‘forward-looking statements’ are necessarily based upon a number of estimates and assumptions that, while considered reasonable by Xanadu, are inherently subject to significant technical, business, economic, competitive, political and social uncertainties and contingencies and involve known and unknown risks and uncertainties that could cause actual events or results to differ materially from estimated or anticipated events or results reflected in such forward‐looking statements.
Xanadu disclaims any intent or obligation to update publicly or release any revisions to any forward‐looking statements, whether as a result of new information, future events, circumstances or results or otherwise after the date of this Announcement or to reflect the occurrence of unanticipated events, other than required by the Corporations Act 2001 (Cth) and the Listing Rules of the Australian Securities Exchange (ASX) and Toronto Stock Exchange (TSX). The words ‘believe’, ‘expect’, ‘anticipate’, ‘indicate’, ‘contemplate’, ‘target’, ‘plan’, ‘intends’, ‘continue’, ‘budget’, ‘estimate’, ‘may’, ‘will’, ‘schedule’ and similar expressions identify forward‐looking statements.
All ‘forward‐looking statements’ made in this Announcement are qualified by the foregoing cautionary statements. Investors are cautioned that ‘forward‐looking statements’ are not guarantee of future performance and accordingly investors are cautioned not to put undue reliance on ‘forward‐looking statements’ due to the inherent uncertainty therein.
For further information please visit the Xanadu Mines’ Website at www.xanadumines.com.
Appendix 2: Kharmagtai Table 1 (JORC Code, 2012)
Set out below is Section 1 and Section 2 of Table 1 under the JORC Code, 2012 Edition for the Kharmagtai project. Data provided by Xanadu. This Table 1 updates the JORC Table 1 disclosure dated 8 December 2021.
JORC TABLE 1, SECTION 1 - SAMPLING TECHNIQUES & DATA
(Criteria in this section apply to all succeeding sections).
JORC TABLE 1, SECTION 2 - REPORTING OF EXPLORATION RESULTS
(Criteria in this section apply to all succeeding sections).
JORC TABLE 1, SECTION 3 - ESTIMATION & REPORTING OF MINERAL RESOURCES
Mineral Resources are not reported so Section 4 is not applicable to this Announcement.
JORC TABLE 1, SECTION 4 - ESTIMATION & REPORTING OF ORE RESERVES
Ore Reserves are not reported so Section 4 is not applicable to this Announcement.
______________________________ 1 ASX/TSX Announcement, 6 April 2022 - Scoping Study - Kharmagtai Copper-Gold Project


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Vale creates Vale Ventures to invest US$ 100 million in startups focused on sustainability
With the initiative, the mining company will acquire minority stakes in startups focused on sustainable solutions for the mining area.
THE OK announced this Wednesday, 8th, the creation of Vale Venturesa corporate venture capital (venture capital) initiative to invest in startups focusing on sustainable solutions for the mining sector. The company informed that it is committing capital of US$ 100 million, about R$ 489 million, in investment.
With the initiative, the mining company will acquire minority stakes in startups focused on four themes:
- Decarbonization in the mining chain, investing in “technologies that help Vale and its customers reduce carbon emissions, supporting the company’s ambition to reduce emissions to be carbon neutral by 2050”.
- Waste-free mining, with the aim of “reducing waste and the environmental impact of processes, fostering a circular economy and generating new revenue streams”.
- Energy transition metals, “to accelerate the ability to supply essential metals for energy transition and emerging demand drivers”.
- Mining of the future, with investment in “new technologies that will change the way miners run their business”.
“We will collaborate with forward-thinking startups that bring big ideas and bold thinking to these monumental challenges. By assembling a portfolio of disruptive solutions, we can generate financial and strategic returns, creating new business opportunities, insights and knowledge for Vale, customers and society,” says Vale Ventures leader Viktor Moszkowicz.
Startups wishing to register for the initiative should access the website www.vale.com/valeventures.


BEIJING : China’s iron ore imports dropped in 2021, down 4.3per cent from the earlier yr’s record annual excessive, as steel manufacturing curbs imposed to fight air pollution dented demand and pulled costs of the important thing steelmaking materials off historic highs.
The world’s high iron ore client introduced in 1.12 billion tonnes of the commodity final yr, in contrast with 1.17 billion tonnes imported in 2020, knowledge from the General Administration confirmed on Friday.
For December, China imported 86.07 million tonnes of the uncooked materials, down 18per cent from November, the info confirmed.
(Graphic on, China’s annual iron ore imports: https://fingfx.thomsonreuters.com/gfx/ce/zgpomayjkpd/annualironore.png)
China consumed iron ore at a speedy fee within the first 5 months of 2021, backed by sturdy steel manufacturing as mills loved first rate earnings underpinned by a restoration in demand after the primary waves of the coronavirus pandemic.
However, imports then began to contract on an annual foundation as authorities urged steel mills to chop manufacturing to fulfill an annual goal of holding crude steel output flat. Slowing building exercise additionally muted downstream demand for the commercial metallic.
During June-December 2021, China’s iron ore imports slid almost 10per cent from the identical interval a yr earlier. Benchmark iron ore futures costs on the Dalian Commodity Exchange dived 45per cent by end-December from the height of 1,239 yuan per tonne logged in May.
(Graphic on, China’s seasonal iron ore imports: https://fingfx.thomsonreuters.com/gfx/ce/jnvwejklwvw/seasonalironore.png)
“For 2022, iron ore supplies from major miners are expected to remain stable, while the demand-side is largely decided by authorities’ policy towards steel output controls,” mentioned Zhuo Guiqiu, analyst with Jinrui Capital.
A government-backed consultancy expects iron ore imports to proceed to say no to round 1.08 billion tonnes in 2022 on falling steel manufacturing and rising utilization of steel scrap.
The customs knowledge on Friday additionally confirmed the nation’s steel merchandise exports jumped 24.6per cent to 66.9 million tonnes in 2021 from a yr earlier, although mills and merchants had been urged by Beijing to make sure provide for home market.
China’s steel imports final yr dropped 29.5per cent to 14.3 million tonnes, in accordance with the customs.
(GRaphic on, China’s steel exports and imports: https://fingfx.thomsonreuters.com/gfx/ce/akvezejnopr/steeltrade.png)
(Reporting by Min Zhang and Dominique Patton; Editing by Christian Schmollinger & Shri Navaratnam)


Cast Iron Cast Iron is a casting method that is especially used in heavy industry sectors. Steel and iron alloys that have been melted at high temperatures are quickly cooled with a special cooling method, resulting in high strength and durability properties. Pik casting is used in various sectors such as automotive, defense, mining, energy, and machinery manufacturing. As Kutluk Casting, we specialize in pik casting and produce high-quality pik casting products.
Ductile Iron Casting Ductile Iron Casting is a casting method where iron alloys are melted at high temperatures and then rapidly cooled using a special method to obtain high strength and durability properties. Spheroidal casting is preferred in many industries due to its high strength and durability properties. As Kutluk Döküm, we are a company specialized in spheroidal casting and we produce high-quality spheroidal casting products.


AE Portfolio Aggressive Holding Rio Tinto Ltd (ASX: RIO, NYSE: RIO) reported record global iron ore shipments of 247 million metric tons (Mmt) for 2012 despite severe weather disruptions and a significant maintenance shut-down during the year.
Although the company has been hit by lower prices for its key output, management remains committed to expanding production of iron ore from the Pilbara region of Australia.
Global iron ore production for the full year was 253 Mmt, of which Rio Tinto’s share was 199 Mmt. That represents a 4 percent increase over 2011 levels. Although Rio Tinto’s overall output profile is diversified, iron ore represents more than 70 percent of earnings.
Management had forecast 2012 output of 250 Mmt of iron ore. Attributable iron ore production in the fourth quarter was 51.95 Mmt, better than a consensus estimate from analysts of 50.6 Mmt.
In his comments on the result CEO Tom Albanese noted that Rio Tinto “achieved record annual iron ore production and shipments as our expansion programme continues on schedule.”
Production gains were realized even as iron ore prices plunged in 2012 to USD85 per metric ton. Rio Tinto reported a 22.4 percent decline in 2012 first-half earnings to USD5.9 billion from USD7.6 billion a year ago, as prices for iron ore, copper and aluminum fell and costs at its operations climbed. Management plans to cut operating costs by more than USD5 billion by the end of 2014 and will cut exploration spending by USD1 billion during 2013.
Rio Tinto will report full financial results for 2012 and provide details of its final dividend for the year on Feb. 14, 2013.
Iron ore prices have now rebounded by nearly 80 percent since a September 2012 near-term low to a 15-month high around USD150, as signs of an economic recovery in China, the world’s biggest iron ore importer, continue to gather.
Production of iron ore from the key Pilbara region was 239 Mmt in 2012, of which Rio Tinto’s share was 191 Mmt, 4 percent higher than a year ago and good for another annual record.
Full-year 2012 sales of 233 Mmt were 3 percent higher than 2011, and fourth-quarter sales of 63 Mmt set a new fourth-quarter record, 2 percent higher than in 2011. Sales increased quarter over quarter throughout 2012, driving a company record for annual sales volumes despite significant market volatility.
Current capacity in the Pilbara has risen from 225 million metric tons per annum (Mmtpa) at the start of 2012 to 237 Mmtpa through de-bottlenecking and productivity improvement with “minimal capital spend.”
The expansion of Rio Tinto’s Pilbara infrastructure to support 290 Mmtpa of production by the end of this year and 360 Mmtpa by the first half of 2015 remains on track.
Early this year Rio Tinto’s Pilbara ports were closed for 87 hours due to Tropic Cyclone Narelle passing down the West Australian coastline. Despite the closure of the ports for shipping, the mine sites, and rail haulage from mine sites to port, continued to operate at full capacity throughout this period.
The head of Rio Tinto’s iron ore unit, Sam Walsh, had said that short-term factors such as re-stocking by steel mills and commodity traders as well as the onset of cyclone season in Western Australia were behind the recent uptick in iron ore prices. Mr. Walsh, speaking to The Australian, emphasized the cyclical nature of the iron ore market and reiterated Rio Tinto’s commitment to cutting costs.
Offering somewhat more detail on the future of iron prices are analysts for The Goldman Sachs Group Inc (NYSE: GS), who suggest that the key steel input will see another year of “exceptional prices” before supplies start to outpace demand, JPMorgan Chase & Co (NYSE: JPM) and Deutsche Bank AG (Germany: DBK, NYSE: DB).
Goldman Sachs sees iron prices averaging USD144 in 2013, up from a prior estimate of USD140, before declining to USD126 in 2014, USD90 in 2015 and USD80 in 2016. JPMorgan boosted its 2013 estimate to an average USD130 from USD110, while Deutsche Bank forecast prices may climb to USD170 in the first half before falling below USD120.
Total mined copper production for 2012 was up 6 percent in 2012 compared to 2011 due to expected recovery in ore grades at Kennecott Utah Copper and the Escondida mine in Chile. Refined copper production improved at Kennecott Utah Copper following scheduled smelter maintenance during the second quarter.
Production of copper contained in concentrate at Kennecott increased through the second half of 2012 due to the expected recovery in ore grades, with fourth-quarter production 26 percent higher than the fourth quarter of 2011.
Molybdenum production was lower than the third quarter and corresponding periods in 2011, reflecting lower grades due to mine sequencing. Management expects grades to recover in early 2013.
Mined copper production at Escondida in 2012 was 38 percent higher than 2011, and fourth-quarter production was 33 percent higher than the fourth quarter of 2011. Improvements were driven by an expected recovery in ore grades and increased ore delivered to the concentrator.
Construction of the Oyu Tolgoi copper-gold project in Mongolia is 99 percent complete as of Jan. 15, 2013. Mining and stockpiling of first ore began in April 2012.
On Nov. 5, 2012, Rio Tinto announced that Oyu Tolgoi had signed a binding agreement with a Chinese power company for the supply of electricity to the project. Commissioning of the ore-processing equipment began in mid-November. First ore was processed through the concentrator on Jan. 2, 2013. First concentrate production will follow within one month, and commercial production is expected to commence by June 2013.
Bauxite and alumina production in 2012 were 11 percent and 12 percent higher than 2011, driven by increased third-party demand for bauxite and expanded refining capacity at Yarwun. Aluminium production was 10 percent lower than in 2011, as ramp-up to normal capacity continued following resolution of the Alma labor dispute.
Thermal coal production for the full year was 16 percent higher than in 2011, reflecting increased plant capacity at Bengalla, the continued ramp-up at Clermont and the reversal of one-time disruptions in the fourth quarter of 2011.
Hard coking coal production was 9 percent lower than in 2011 due to the impact of planned maintenance and a major preparation plant shutdown as part of a mine expansion project.
In response to the persistently strong Australian dollar, declining coal prices and higher input costs Rio Tinto “is actively reducing controllable costs” in its coal business.
Titanium dioxide feedstock production for the full year increased 11 percent from 2011 following a successful furnace rebuild and an increase in volumes attributable to Rio Tinto from Richards Bay Minerals.
Among Australian analysts currently covering Rio Tinto 12 rate the stock a “buy”, while four rate it a “hold” and one rates it a “sell.” The average 12-month price target from 12 of the 17 analysts is AUD74.25.
Since hitting a 12-month closing low of AUD48.63 on the Australian Securities Exchange (ASX) on Aug. 30, 2012, Rio Tinto has enjoyed a solid rally. The stock reached a post-low peak of AUD69.25 on Jan. 3, 2013, but has been in mild decline from that point, closing at AUD65.55 on Jan. 16.
Rio Tinto is currently yielding 2.7 percent. Despite its commodity-price related problems in the first half of 2012 management boosted the interim dividend by 34 percent to USD0.725 per share.
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The method given is applicable to copper, lead and zinc sulfide concentrates free from volatile organic flotation reagents, e.g. kerosene, and with hygroscopic moisture contents between 0,05 % (m/m) and 2 % (m/m). It is used to correct the analysis results from the equilibrated moisture level to the dry basis. This method is not applicable to sulfide concentrates which are susceptible to oxidation. Annex A sets out a modified procedure which can be used in this case.


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Jaw Crusher is designed to speed up the crushing of aggregates, ores, minerals, coke, chemicals and others similar materials. It is compact and of rugged construction for general laboratory or small pilot plant operations. The set-up contains two Jaws of hard steel with one Jaw stationary and other moving. The movable jaw produces blows for every revolution reducing over sizing to a minimum. A combination of forward and downward strokes with a rocking action exert pressure on the coarser materials yet permits the finished materials to pass through the jaws. A hopper is provided at the top for feeding material. The smooth jaws ensure a uniform product and easy cleaning is possible. The opening of the Jaw is adjustable. The motor is coupled to the machine through Triple `V' belt drive
To determine the efficiency of the Crusher for crushing a material of known working index.


Atlantic Gold springs an effluent leak, plugs a new mine, and sells itself to investors
This article first appeared in The Halifax Examiner on March 15, 2019.
By Joan Baxter
Atlantic Gold’s manager of environment and permitting, James Millard, calls it a “spill” or a “loss of control” caused by a “gasket failure.”
By whatever name, the event happened on the night of January 3, 2019, at the company’s open pit gold mine at Moose River. It involved 380,000 litres of contaminant-laced slurry, which flowed from the processing plant where ore is crushed and gold extracted, and down a trench underneath the double-lined 500-metre pipe that should have been carrying the effluent to the tailings pond.
The leaked slurry flowed into a lined pond that Millard says was developed and designed for leaks.
During an open house that Atlantic Gold held in Sheet Harbour on Thursday to showcase one of three new gold mines that it wants to open on the Eastern Shore, Millard told me the incident was reported immediately to Nova Scotia Environment, as the amount exceeded spill limits. He said the department has inspected the site and been working with Atlantic Gold.


With about 10 years manufacturing experience, Zhengzhou Jiangtai Heavy Industrial Machinery Co.,Ltd (JTHIM) is a heavy machinery manufacturer ,subordinating to China CMIIC Engineering & Construction Corporation (CMIIC) Our leading products include complete Mineral processing equipment and sand making equipments.. And Mineral processing equipment mainly includes jaw crusher, impact crusher, ball mill, classifier, flotation machine, magnetic separator, and shaking table, which is applicable to concentrate both metals such as iron, copper, gold, silver, lead, tungsten, molybdenum, manganese and non-metal ores such as fluorite and quartz, etc.Sand making equipment includes PCZ single-stage hammer crusher, DPC single-stage fine crusher, PXJ Small aggregate crusher (Third generation sand-maker), jaw crusher, impact crusher, hammer crusher, composite crusher, manganese steel double roll crusher, rod milling sand maker, vibration sifter, conveyor, and sand washer. Sandstone equipment is applicable to construct airport, railway, freeway, average highway, national large bridge, sub-bottom tunnel, land tunnel and new-type high building. Zhengzhou jiangtai Heavy Industrial Machinery Co.,Ltd has attracted a large number of scientific manpower and manages talents who represent the advanced level of domestic industry, and has trained a group of production worker with high efficiency and high quality. We can manufacture top-ranking products and provide first class service. Our clients spread all over China. Moreover, our products sell well in east Asia, south Asia, Middle East, Africa, South America, etc with the annual export quantity composing 70% of the total sales, wining high praises from purchasers. With the goal of "The excellence, the better" and "Satisfaction from customers" as our eternal pursuit, we welcome clients from all over the world to come to our factory for a visit and establish business cooperation.


ZD/G type slurry pump is suitable for mining, metallurgy, electric power, coal, chemical, building materials and other industries, conveying abrasive and corrosive slurry containing solid particles, such as power plant ash transportation, coal slurry transportation, metallurgical beneficiation plant slurry Transportation, coal washing plant coal slurry and heavy medium transportation. The maximum weight concentration of the solid-liquid mixture is 45% mortar and 60% pulp.
Flow rate: 4-2550 m3/h
Head: 9-135 m
Flange standard: HG/T 20592-2009
Temperature: -20-120 ° C
Lubrication: thin oil lubrication
Operating status: continuous operation
Steering: The pump rotates clockwise from the drive end
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4) The bearing position is designed with temperature measuring device, which is convenient for customer's on-site DCS control system data acquisition.
Address: No.2, Xinguang Road, Nissan Industrial Park, high tech Zone, Xiangyang City, Hubei Province


Because of global warming and the fact that nuclear power does not produce climate warming gases, the price of uranium has suddenly increased as various governments, including the UK government, plan to build more nuclear power plants. Uranium is present in Permian-Triassic sandstones in the Karoo Basin, South Africa. Exploration reveals that the uranium was leached from granitic-volcanic source material and taken into solution in groundwater under lkaline/oxidising conditions.
The mineralised groundwater preferentially moved through channel sand bodies and, on encountering a reducing agent, was precipitated from solution as primary uranium minerals. Proterozoic gold deposits in Guyana, South America are similar to those in the Witwatersrand Basin, South Africa. They occur in quartz arenites which form a prominent escarpment in the almost inaccessible interior of the country. Exploration reveals that gold tends to concentrate in specific parts of the succession associated with auriferous gravels, which modelling suggests represent low stand or transgressive reworking of older deposits, probably derived from the gold-bearing Archean basement. The gold deposits have themselves been subject to erosion and reworking to form recent gold-bearing sands and gravels deposited along the numerous streams and rivers, commonly worked by local prospectors and large dredgers. In his lecture Brian Turner will explore some of these ideas and discuss his involvement with the search for these important resources.


The digging and drilling of a sander on private piece of land near the Tannourine Cedar Reserve has caused some major concern. Work on the sander has resumed after it was stopped by an official decision. The dust caused by the drilling has been causing pollution and also damaging old trees in the reserve. The environmental impact of operating this sander is jeopardizing previous reforestation programs initiated by various programs from the Lebanese Government.
The Minister of Environment (MOE) Mohammed Machnouk asked the Ministry of Interior and Municipalities (MOIM) to tighten control on quarries and other drilling activities (including sanders). The Minister stressed on the importance of monitoring these activities in order to ensure all operating quarries has the proper paperwork and licenses.
There is extensive legislation on quarries in Lebanon. Decree No. 5616/1996 regulated the quarry sector and designated the MOIM the responsibility to issue quarry permits in consultation with the MOE. This was modified in 2002 by Decree No. 8803 which introduced more regulations than Decree 5616.
Decrees 16456/2006, 1735/2009, and 8803/2002 incorporated environmental issues in the quarry legislation. Such issues include prohibition of quarrying in protected areas, expert supervision to oversee certain activities, addressing potential impacts on surface and groundwater, amongst other issues.
In 2009 a series of decisions (16/1, 17/1, 18/1, and 20/1) defined license conditions documents required for crushers for gravel production, rock quarries for crushers and rubble, rock quarries for producing mosaics, and sand quarries or naturally fragmented gravel.


(Information sent by the signatory company)
TSXV: PGZ | OTCQX: PGZFF | FSE: 2EU
VANCOUVER, CB, March 21, 2024 /PRNewswire/ -- Pan Global Resources Inc. ("Pan Global" or the "Company") (TSX-V: PGZ; OTCQB: PGZFF; FSE: 2EU) is pleased to announce the successful results of a flotation variability testing program for copper ("Cu") recovery at the La Romana copper-tin-silver deposit at the Escacena Project in southern Spain. Metallurgical tests are also being carried out for the recovery of tin, which will be reported when available.
"The new copper metallurgy test results at the La Romana deposit are further confirmation that simple conventional flotation can produce a clean, high-quality, high-value copper concentrate at potentially below-average cost." of the pyritic belt. These characteristics are highly desirable for smelters and potentially attractive for blending with lower quality concentrates, to increase their value and reduce penalty costs. These results are an important step in the development of the project to determine the optimal process costs, metal recoveries, cash flow projections and economic studies," said Tim Moody, President and CEO of Pan Global.
The metallurgical testing program is being carried out by Wardell Armstrong International (United Kingdom), under the coordination and direction of Minepro Solutions SL (Spain).
Minepro Solutions SL reported on March 19, 2024: "Compared to the average of the deposits in the Pyrite Belt, the La Romana mineral deposit has shown lower energy requirements for both crushing and grinding, larger release sizes coarse, and superior performance in the copper flotation process. This includes higher concentrate grades and improved recoveries using conventional circuits and chemical agents, indicating a moderate operating cost outlook for the process."
Results to highlight
Variability testing program
The primary objective of the La Romana metallurgical testing program is to determine the optimal mineralurgical process scheme and treatment plant design to produce marketable copper and tin concentrates.
The metallurgical variability study and new grinding tests were carried out using drill core samples selected from 10 blocks distributed throughout the La Romana deposit, and at different depths to help simulate different phases of mining extraction. Applying the same testing conditions, results for all blocks were compared to a reference sample ("REF") from previous metallurgical testing work reported on April 11, 2023.
The process diagram for the variability tests reproduced the process diagram and chemical reagents used for the reference sample. Specific:
Approximately 50 additional boreholes have been conducted at La Romana after samples were selected for the variability testing program in May 2023, and the copper deposit has extended westwards for a length of 400 meters and remains open to further expansion. In due course, it will be considered to extend the metallurgical tests to the western extension of the La Romana deposit.
Tin metallurgy results are expected to be reported shortly, and results from additional drilling at the Cañada Honda discovery are pending. Additional drilling is planned at both La Romana and Cañada Honda as part of the 2024 drilling program.
Figure 1 – Distribution of the 10 blocks and the composite samples chosen for the variability tests (W-E section view towards north).
Figure 2 – La Romana Closed Circuit Testing (LCT) Flowchart
Table 1 – Summary of closed loop testing (LCT) and reference sample (REF)
Table 2 – Head grades, open circuit concentrate grades and recoveries
Ro = Rougher, Cl = Cleaner
1 = Estimated
Table 3 – Grinding test results (Bond Ball Mill Work Index)
About the Escacena Project
The Escacena Project comprises an area of land of 5,760 hectares controlled 100% by Pan Global in the east of the Iberian Pyrite Belt. The Escacena Project is located near the operating Riotinto mine and adjacent to the former Aznalcóllar and Los Frailes mines, where Minera Los Frailes/Grupo México is in the final permitting phase and construction is expected to begin in 2024. The Escacena Project hosts the La Romana copper-tin-silver and Cañada Honda copper-gold discoveries, as well as other prospective targets, such as Bravo, Barbacena, El Pozo, Romana Norte, San Pablo, Zarcita, Hornitos, La Jarosa and Romana Deep.
About Pan Global Resources
Pan Global Resources Inc. is actively pursuing copper-rich mineral deposits, given compelling copper supply-demand fundamentals and prospects for strong long-term prices as a critical metal for global electrification and the energy transition. The Company's flagship Escacena Project is located in the prolific Iberian Pyrite Belt in southern Spain, where a favorable permit history, excellent infrastructure, mining and professional experience, and support for copper as a Strategic Raw Material by part of the European Commission collectively define a first-level jurisdiction for mining investment. The Pan Global team is made up of professionals with recognized talent in exploration, discovery, development and mining exploitation, all of them committed to operating safely and with the utmost respect for the environment and the communities with which we collaborate. The company is a signatory of the United Nations Global Compact and operates in accordance with its principles.
Álvaro Merino, Vice President of Exploration of Pan Global Resources and a qualified person as defined by National Instrument 43-101, has approved the scientific and technical information in this press release. Mr. Merino is not independent of the company.
Statements that are not purely historical are forward-looking statements, including any statements regarding beliefs, plans, expectations or intentions regarding the future. It is important to note that the Company's actual results and results could differ materially from those in such forward-looking statements. The company believes that the expectations reflected in the forward-looking information included in this press release are reasonable, but there can be no assurance that these expectations will prove to be correct and undue reliance should not be placed on such forward-looking information. Risks and uncertainties include, but are not limited to, economic, competitive, governmental, environmental and technological factors that may affect the company's operations, markets, products and prices. Readers are referred to the risk disclosures contained in the company's management and analysis report of the company's audited financial statements filed with the British Columbia Securities Commission.
The forecast information contained in this press release is based on information available to the company as of the date of this press release. Except as required by applicable securities laws, the company does not intend to update this forward-looking information, nor does it assume any obligation to do so.
NEITHER TSX VENTURE EXCHANGE NOR ITS REGULATION SERVICES PROVIDER (AS SUCH TERM IS DEFINED IN THE POLICIES OF THE TSX VENTURE EXCHANGE) ACCEPTS ANY RESPONSIBILITY FOR THE ADEQUACY OR ACCURACY OF THIS RELEASE.
FOR MORE INFORMATION PLEASE CONTACT:Jason Mercier, VP Investor Relations and email@example.com / firstname.lastname@example.org: 1-778-372-7101 / 1-604-689-9930 www.panglobalresources.com
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As an environmental advocate, addressing the adverse ecological effects of mining and blockchain technology is paramount. The rapid expansion of these sectors has brought concerns about their environmental footprint to the forefront. However, there are proactive measures that can be taken to mitigate their negative impact on the environment.
1. Adoption of Energy-Efficient Technologies: Implementing energy-efficient protocols and technologies is crucial in curbing the energy consumption of blockchain networks. Moving towards consensus mechanisms that require less computational power, such as Proof-of-Stake (PoS) over Proof-of-Work (PoW), can substantially reduce energy usage. Additionally, optimizing hardware and software used in mining operations for higher efficiency plays a pivotal role in decreasing energy consumption.
2. Promotion of Responsible Practices: Educating stakeholders within the mining and blockchain sectors about environmentally responsible practices is essential. Encouraging the use of energy-saving strategies, promoting recycling of hardware components, and advocating for responsible waste disposal are vital steps in mitigating the ecological impact. Blockchain companies can play a pivotal role in leading by example, emphasizing and incentivizing sustainable practices within their operations.
3. Offsetting Carbon Emissions: Implementing carbon offset programs can mitigate the environmental impact of energy-intensive mining operations. Mining companies can invest in initiatives that support reforestation, renewable energy projects, or carbon capture technologies. Offsetting carbon emissions generated by mining activities helps balance out the environmental impact, contributing to a more sustainable approach.
4. Development of Green Mining Technologies: Investing in research and development of green mining technologies is essential. Innovations focused on enhancing mining hardware efficiency, optimizing cooling systems, and utilizing innovative energy-saving techniques can significantly reduce the energy consumption associated with mining operations. Supporting the implementation of these technologies can lead to a more sustainable mining industry.
5. Community Engagement and Collaboration: Engaging local communities where mining operations take place and fostering collaboration can yield positive environmental outcomes. Establishing partnerships to support local environmental initiatives, providing education on eco-friendly practices, and involving communities in sustainability efforts can create a more harmonious relationship between mining activities and the environment.
6. Using Renewable Sources of Energy: Shifting away from reliance on fossil fuels towards renewable energy sources like solar, wind, hydroelectric, and geothermal power can significantly diminish the carbon footprint associated with mining activities. Integrating renewable energy into mining facilities helps mitigate environmental degradation and minimizes greenhouse gas emissions.
7. Regulatory Frameworks and Incentives: Governments and regulatory bodies can play a pivotal role in promoting environmentally responsible practices within the mining and blockchain sectors. Implementing regulations that encourage the use of renewable energy sources, offering incentives for adopting energy-efficient technologies, and setting environmental standards for mining operations can drive industry-wide sustainability efforts.
8. Encouraging Decentralization: Promoting decentralization within blockchain networks can contribute to a more eco-friendly ecosystem. Decentralized networks distribute computational power across multiple nodes, reducing the energy intensity associated with centralized processing. Supporting initiatives that prioritize decentralized architectures can help alleviate the environmental burden of concentrated mining activities.
By advocating for and implementing these strategies, the mining and blockchain industries can significantly mitigate their effects on the environment. Collaborative efforts among industry stakeholders, policymakers, and environmental organizations are crucial in driving these changes towards a more sustainable future.
In conclusion, addressing the environmental challenges posed by mining and blockchain technology necessitates a concerted effort towards adopting eco-friendly practices. Transitioning to renewable sources of energy, adopting modern energy-efficient technologies, and promoting responsible practices are pivotal steps in decreasing the environmental impact. Embracing these strategies not only fosters sustainability within the industry but also contributes to a healthier planet for all future generations


It's time to rewrite the history books. In Situ Leach Mining (ISL), or Solution Mining, was not first commercially started in Bruni, Texas in 1973 by Westinghouse, a consortium of oil companies and others. The birthplace of ISL was never South Texas, as some have claimed. It was begun in Wyoming, about 16 years before an ISL operation was started in Texas. Why there has been a whitewash over the true history of ISL is not our concern. This series is an in-depth investigation into how and why ISL mining came about, how it has been tested over a period of nearly 50 years, and why this type of uranium mining will play an important role in providing U.S. utilities with the raw fuel to power nuclear reactors for the next few decades.
In this modern era of uranium mining, extremely skilled engineers, hydrologists and geologists establish ISL mining operations. Most insiders compare an ISL operation to a water treatment plant. It's really that simple to understand. However, as with every modern industrial operation, the roots of ISL mining came about in a less genteel or sophisticated manner. In 1958, Charles Don Snow, a uranium mining and exploration geologist employed by the Utah Construction Company, was investigating a Wyoming property for possible acquisition for his company. During the course of that visit, he discovered a new method of uranium mining and helped pioneer its development into the modern form of ISL.
Since 1957, R.T. Plum, president of Uranyl Research Company, had been experimenting with a leach solution on his property at the Lucky June uranium mine. "They mixed up the sulfuric acid solution and just dumped it on the ground, and soaked it through the material and collected it in a little trench at the end," Charles Snow told StockInterview. It wasn't very scientific. Snow added, "They were just learning how, and I observed it and thought that the application could be made through some of the ore that we had in the Lucky Mc mine." The company was mining uranium this way because it was below the grades miners were used to, when mining. As Snow noted, "It was not worth mining." But it was practically at the surface. He explained what they were doing at the Lucky June, "There was an area where uranium leached out to the surface in a small area, and it had a clay under-bed. These people put solutions onto the surface, collected the solution, and ran it by resin beads to absorb the uranium."
While they only recovered about $3600 worth of uranium, roughly 600 pounds, Snow was impressed. He later wrote an inter-office memorandum in July 1959, with the subject header: "Recovery of Uranium from Low Grade Mineralization using a leach in place process." In his conclusion, Snow recommended, "From the preliminary information available, it appears that it will be possible to treat very low grade mineralization for recovery of uranium at a large net profit." He explained the process to his bosses, encouraging them to consider this as an option:
"In brief, the process introduces a leach solution onto the surface of the ground and allows the solution to percolate down through the area to be leached. The solution is then recovered from wells and circulated through an ion exchange circuit with the barren solution being returned to the leach area. Recovery of the uranium is made by stripping from the ion exchange medium."
He wanted the Utah Construction Company to try this method of mining where there was low grade mineralization. Snow succeeded in convincing his bosses. That began yet another innovation for Utah Construction Company, the same company which helped construct the Hoover Dam, decades earlier, before it got into the uranium mining business.
Utah Construction Becomes the First Commercial ISL Miner
Newspaper reports, through the 1960s, illustrate that ISL mining was in full bloom more than a decade before anyone in Texas began a commercial ISL operation. On June 18, 1964, the Riverton Ranger newspaper reported, "The Shirley Basin mine is on a standby basis. The timbers are being maintained and the water pumped out. Total production comes from solution mining." Between 1962 and 1969, ISL was the only method producing uranium at Utah's Shirley Basin Wyoming. Later in that same article, under the section entitled, "Gas Hills Solution Mining," it was reported, "The Four Corners area is 'mined' by solution mining techniques similar to those employed at Shirley Basin." Credit for this new mining method is also reported in that same article, "Lucky Mc introduced the heap leach process of recovering values from low grade ores in 1960."
Charles Snow explained how his company made the transition from underground mining to solution mining, "The underground mining at Shirley Basin was very expensive, and we were having a lot of heavy ground problems." The sandstone aquifers containing the uranium were uncemented and brittle, supported with timbers. "In some places, it was too heavy to hold with timbers," said Snow. "We had to use steel sets underground, and it was even mashing the steel sets. So the expenses were getting very high."
Water was flowing into the open drifts at prodigious rates. Snow recalled, "Barney Greenly said, 'Let's try solution mining over here.' They did a test, and it did operate quite well. They got some pretty good results. So the underground mine was shut down, and they went to a solution-mining program to produce the allocated pounds in the Shirley Basin area." The procedure was tested for a few years before a full-scale commercial production began. This fulfilled 100 percent of Utah's Shirley Basin uranium production allotment from the AEC.
There were problems at first. "We started out initially using sulfuric acid, and we had some reaction with carbonates in the formation." Sulfuric acid plus calcium carbonate produces calcium sulfate, and this plugged up the formation. Calcium sulfate is gypsum, which was insoluble in the leach solution. "It tended to plug up the formation and reduce the transmissivity of the fluid from the input hole to the output recovery hole."
To prevent interference with the porosity of the formation, Snow switched to nitric acid, but admitted, "We were reluctant to use nitric acid because it was much more expensive than sulfuric." But they did, because the nitric acid solution did not form gypsum. Unlike present-day ISL methods used in Texas, Nebraska and Wyoming, Utah Construction did not use a carbonated leaching solution in their solution mining. Nitric solution was used during the 1960s and continued until the Lucky Mc switched over to open pit mining.
It all started as a heap leach experiment. "We had quite a bit of low grade in Lucky Mc," Snow told us, "so we thought we would try a heap leach experiment." Results were good on the test, and Utah pioneered ISL mining. Snow wrote in an August 2, 1960 memo, "The favorable results of the heap leach project and other research indicate that the process can be successfully applied in many of the low-grade areas to recover much of the mineralization." Later in his report, Snow calculated reserves from random samples obtained from previous drilling at Lucky Mc, "The estimated reserve for the block is 147,000 tons @ 0.0361 percent U3O8, or 106,616 pounds of U3O8." He estimated the program would cost $111,471. Using a value of $6/pound for U3O8, the anticipated returns were calculated as follows:
50 percent recovery: 53,318 pounds: $208,377
25 percent recovery: 26,654 pounds: $ 48,453
That was just the start. By the end of the decade, Shirley Basin's solution mining operation was producing U3O8 at comparable levels to present day production at any of the major U.S. ISL facilities. In a paper presented by Ian Ritchie and John S. Anderson, entitled "Solution Mining in the Shirley Basin," on September 11, 1967, at the American Mining Congress in Denver, Colorado, these Utah International executives explained the success of the Shirley Basin solution mining operation. In a summary explaining the company's activities, we discovered the Shirley Basin operation not only filled the Atomic Energy Commission (AEC) allocation requirements from 1962 through 1969 but we learned of the sizeable commitments into the future Shirley Basin was to fill:
"In 1968 sales of uranium concentrate were made to purchases other than the AEC. One of the first sales was to Sacramento Municipal Utility District with a minimum of 950,000 pounds to a maximum of 1,100,000 pounds of uranium concentrate in 1971. Additional contracts were signed with General Electric Company and with Nordostschwerzerische Kraftwerke A.G. (Baden, Switzerland). The contracts called for delivery of 8,000,000 pounds of concentrate to GE between 1968 and 1975, and 500,000 pounds of concentrate to NOK commencing in July 1969."
The single reason solution mining stopped, well before the first "commercial" ISL operation began in Bruni, Texas in 1973, was because of the improved market forecast for uranium in the 1970s. Utah Construction switched to open pit mining because they needed to produce a lot more uranium. The nuclear renaissance of the 1970s demanded massive quantities of uranium to fuel the rapidly growing nuclear power industry.
Don Snow's initial field tests, begun in the late 1950s, resulted in continuous production achieved by late 1962. Subsequently, production in the underground uranium mine was shut down by May 1962. The underground mine was maintained in a standby condition until 1965, when all underground operations were written off. Millions of pounds were mined by Utah Construction through its ISL operations in Shirley Basin. It wasn't heap leaching.
Sufficient evidence confirms that Wyoming, not Texas, first pioneered commercial ISL mining. Not only were well fields designed as early as 1960, but the entire concept of an ISL "water treatment" plant can trace its roots to Utah Construction's pioneer work. Everything from injection wells to production wells were pioneered in the early 1960s. We challenged Charles Don Snow that some have claimed it was heap leaching, not ISL mining. Snow shot back, "No, we drilled holes in the ground and the material had never been mined. We got our ideas, certainly, from heap leaching, which came from the copper industry." Snow explained that after the solution mining experiment was successful, "A recovery plant was designed and put into the hoist house, where they had had the underground mine. That was designed by Robert Carr Porter and Ian Ritchie." Snow added, "In fact, Ian Ritchie and J.S. Anderson have a U.S. Patent on the well completion procedures that we used at Shirley Basin."
Snow pondered if his friend Jack Bailey may have exported the ISL technology to Texas. "Jack Bailey was the Shirley Basin project manager for the underground mine when we switched over to solution mining," Snow said. "He later went to work for Chevron, and Chevron had operations in Texas. I believe they even experimented with solution mining. Now, whether or not Jack was directly involved, I don't know." As it is with history, many of the old-timers are gone. We were told Jack Bailey had had a stroke a number of years back, and did not trace this further. There may have been others. "Some of the people from that area (Shirley Basin) had gone to Texas," Snow recalled. "There is documentation, it was published information, and a lot of people who went to Texas, came from the Wyoming area. So, I'm sure there wasn't a paucity of information being transferred." Ironically, the Westinghouse-led consortium, which included U.S. Steel and Union Carbide, among others, was called Wyoming Minerals. Now we know exactly why they chose that name.
While there have been a number of ISL operations built and operated in Texas, there may be little future for uranium mining in that state, unless there are new discoveries. By a few, Texas has been inaccurately called the "home of ISL mining." Perhaps that came about because ISL operations continued, during the uranium depression of the past two decades, with small amounts of production occurring in Texas. According to Energy Information Administration figures published in June 2004, uranium reserves in Texas stand at 23 million pounds of U3O8 based upon $50/pound uranium. By comparison, Wyoming and New Mexico reserves, using that same benchmark, reach as high as 363 million and 341 million pounds, respectively.
This may explain the rush by junior exploration companies, such as Strathmore Minerals (TSX: STM; Other OTC: STHJF), Energy Metals Corporation (TSX: EMC), UR-Energy (TSX: URE), Uranerz Energy (OTC BB: URNZ), Kilgore Minerals (TSX: KAU) and others, to Wyoming. The large quantities of pounds are in Wyoming, not Texas. It may also explain why Uranium Resources (OTC BB: URRE) has looked beyond Texas into New Mexico to develop its ISL operation, and Strathmore Minerals has quickly been advancing through its permitting stage on one of its properties in that state. It is fitting that the big past uranium producing states may again become tomorrow's leading U.S. producers. In any event, the entire world of ISL mining owes a debt of gratitude to Charles Don Snow for his pioneering efforts in bringing a heap leach experiment into full fruition as modern-day in-situ mining.
COPYRIGHT © 2007 by StockInterview, Inc. ALL RIGHTS RESERVED.
Source by James Finch


|July 30, 2012|
Gentor Files NI 43-101 Technical Report on Oman Properties
|Toronto, Canada - July 30, 2012 - Gentor Resources Inc. ("Gentor" or the "Company") (TSX-V - "GNT" & OTCQB - "GNTOF") announces that it has filed on SEDAR and EDGAR an independent National Instrument 43-101 technical report in respect of the Company's Oman properties. This report was prepared by H&S Consultants Pty Ltd and is entitled "Technical Report on Mineral Resources at Mahab 4 and Maqail South and Exploration Potential of Block 5 and Block 6, Sultanate of Oman". |
Gentor is a mineral exploration company whose projects include copper and gold properties in the Sultanate of Oman and Turkey and a molybdenum-tungsten-silver property in East Central Idaho, U.S. The Company's strategy is to create shareholder value by discovering and developing highly prospective mineral properties around the globe, with current focus in the Sultanate of Oman and Turkey. In Oman, Gentor is partnered with Al Fairuz Mining Company LLC on its Block 5 exploration tenement and Al Zuhra Mining Company LLC on Block 6. In Turkey at the Hacimeter Project, the Company is joint-ventured with the Besler Group.
Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.
For further information, please visit our website at www.gentorresources.com, or contact: Dr. Peter Ruxton, President & CEO, United Kingdom Tel: + 44 (0) 7786 111103; or Arnold T. Kondrat, Executive Vice President, Toronto, Ontario, Tel: (416) 366 2221 or 1 (800) 714 7938.
You can view the Next News Releases item: Tue Aug 28, 2012, Gentor Resources & Besler announce strong copper intersections from initial drilling on the Hacimeter VMS project, eastern Turkey
You can view the Previous News Releases item: Fri Jun 29, 2012, Maiden Resource Estimates for Mahab 4 and Maqail South VMS Deposits
You can return to the main News Releases page, or press the Back button on your browser.


TORONTO, Nov. 5, 2021 /CNW/ – Michael Hopley, President and Chief Executive Officer, Alpha Exploration Corporation, («Alpha») (TSXV: ALEX) and his team joined Monica Hamm, Manager, Client Success, TMX Group, to celebrate the company’s new listing on TSX Venture Exchange and close the market.
Alpha is a company focused on the discovery of world class economic gold & base metals deposits in the highly prospective Arabian-Nubian shield that runs on either side of the Red Sea. Alpha currently holds a 100% interest in the large (1,028 km²) Kerkasha Exploration License in southwest Eritrea, located 135 km west-southwest of the capital city of Asmara. Since acquiring the property in January 2018, Alpha has spent approximately CAD$10 million on exploration and identified 18 prospects, of which 4 have been drilled to date. The large Anagulu gold-copper porphyry system was a virgin discovery by Alpha geologists in early 2018, that was made while executing a property-wide soil geochemical sampling program. The discovery diamond hole was drilled in January 2020 and reported a 49m interval with an average grade of 2.42 g/t gold, 1.10% copper and 6.83 g/t silver. Work continues at Anagulu, and 4 other prospects are expected to be drilled in the near future.
Alpha is managed by a group of highly experienced and successful professionals with many years of experience carrying out exploration and resource development programs in Eritrea and Sudan. For further information go to the Alpha webpage at www.alpha-exploration.com.
SOURCE TSX Venture Exchange


What We Do
At Present, Xinhai business includes Mineral Processing EPC, Wear-Resistant Rubber, LFC Machinery, and Mining Investment.
Xinhai is focused on providing a whole range of services of Mineral Processing EPC (one-stop service for mineral processing plant), including mineral testing, engineer design, equipment manufacture, installation & commissioning and local training. The teams of geologists, mineral processing & mechanic experts of Xinhai are traveling around the world with accumulated experience of 500 EPC projects. Xinhai experts will provide the most professional mineral processing technology for mine investors.
Grid Type Ball Mill
Wet type grid ball mill is lined with Xinhai wear-resistant rubber sheet with excellent wear resistance, long service life and convenient maintenance.Read More
KYF Air Inflation Flotation Cell
Taper impeller with its blades sloping backward at certain angle, simple structure, strong agitation ability, and low energy consumption The impeller is equipped with holey cylinder air allocator. The air scattering is uniform and the mixing effect of air and slurry is good U-shaped tank, little sedimentation of sand.Read More
Service & Support
Technical consulting in the charge of Xinhai Commerce & Technology Support Department solves all of problems related to mineral processing for customers. Service idea of Xinhai: What you need is what we can do!
Building 18, No.1 Wuliqiao 1st Street, North Chaoyang Road,
Chaoyang District Beijing, China
Phone :+86 15311826765E-mail :[email protected]
Xinhai Group founded in 1993 has grown into the industry group involving mineral processing, wearable rubber, mining investment and LFC Machinery after twenty years development. We have been always committed to providing customers with professional, perfect, efficient equipment and solutions. The whole solution we provide for you with the core of reliable & efficient mineral processing schemes and environmental-protection & energy-saving tailings dry stacking, makes us stand up in every EPC bid.


08.12.2016Internal audits 21.11.2016Contract with mineral processing plant 10.10.2016Contract with industrial company 19.05.2016Contract on installation of air conditioning and ventilation systems 13.04.2016Eco Install successfully passed recertification of the quality management system audit
Contract with pulp mill factory
In autumn 2019 Eco Install expanded the project portfolio in the Northwestern Federal District of Russia by taking up duties on complex technical maintenance of a big Russian pulp mill. Among the services provided by Eco Install on a new facility are operation and technical maintenance of power, water, gas supply systems as well as automatics. The total operated area has increased by 10 000 sq. m.


Specialist drilling technology and expertise
We are a UK-based company working with drilling operators to deliver a ‘concept to completion’ service drawn from more than 30 years of hands-on global experience.
Our clients operate in all drilling sectors — the majority are involved in oil and gas, renewables, and geothermals, but our broad experience and skills allow us to work in other specialist areas such as diamond drilling, coal and shale extraction, and water.
The Aurora team also strengthens the Marin Group’s excavating, troubleshooting and asset recovery operations to offer a fully integrated global service. We can also assist with the logistics of setting up rigs.
Our comprehensive range of quality downhole rotary drilling products tools runs from the top drive to the drill bit and include
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All our tooling is manufactured in accordance with API/NS-1 specifications, and the Aurora team is on call 24/7, 365 days a year.
We are based at Marin Group headquarters in Scotland where we have extensive workshop and storage facilities and the support of highly-trained personnel.
Marin Aurora is led by director John Bisset.
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Carissimi Soci SGI,
Carissimi Soci Società Associate,
su indicazione del Dott. Paolo Garofalo, vi segnaliamo l'uscita di un bando RTDA dell'Università di Bologna per un progetto intitolato "Defining strategies for recycling and environmental monitoring of mine tailings at different scales: examples from the large to the small scales (Huludao Mo-Pb-Zn district – Northern China Craton; Libiola Mine – Liguria, Italy)"
Il finanziamento è a valere su fondi PON-FSE REACT-EU Green Transition.
Per maggiori informazioni si rimanda al testo di seguito riportato.
Three-year post-doc position at the University of Bologna - environmental monitoring of mine tailings
We welcome applications by young and highly motivated scientists to contribute to a fixed-term 3-year post-doctoral research project titled
"Defining strategies for recycling and environmental monitoring of mine tailings at different scales: examples from the large to the small scales (Huludao Mo-Pb-Zn district – Northern China Craton; Libiola Mine – Liguria, Italy)"
funding scheme: PON- FSE REACT-EU Green Transition.
The post-doctoral researcher will work in a team of economic geologists, geochemists, and engineers from the University of Bologna, and with professionals from Italian and Chinese industries. They will also benefit from collaborations with scientists from leading national and international institutions.
The aim of this project is to develop a dataset and a best practice approach that makes technically-economically feasible and environmentally acceptable metal recovery from mine tailings of various sizes and origins. The successful candidate will contribute to developing new methods and/or guidelines to measure and quantify sustainable exploitation of mine tailings, including the formulation of standards and frameworks against which the industrial activities can be measured. Mitigation criteria against environmental risks will be also considered.
Applicants will have a PhD in the general area of environmental geochemistry of mine waste, and previous experience or knowledge of multi-disciplinary metalliferous ore deposit studies. Previous engagement in industrial projects, or work experience in the mining/environmental sector, will be considered favourably. The researcher will work as member of a team of multi-disciplinary researchers from academia and industry, and will carry out tasks autonomously in support of scientific research. The researcher will adapt and/or develop original experimental methods, concepts, or ideas in support of existing and future research. The project results based on the considered case studies will be extendible at different scales, from European to international level.
The applicant will be required to travel both within Italy (and possibly elsewhere in Europe) and in China. The position will be based at the Department of Biological, Geological Environmental Sciences of the University of Bologna. Appointment will be at the Junior Researcher level ("Rtd Type a" according to the Italian law). A teaching duty of 60 hours per year (teaching language: English) will be required.
The corresponding brutto salary will be 50361 EUR per annum.
a. The main study areas are located in the Liaoning province of China (Huludao district), in Liguria, Italy, and possibly elsewhere in Europe;
b. Mapping, assessment and sampling of mine tailings using a set of in situ and remote sensing techniques;
c. Estimation of mineralogical composition, grade distribution, and tonnage of mine tailings;
d. Identification of new quantitative methods and/or guidelines for sustainable exploitation of mine tailings;
e. Evaluation of potential mine drainage pollution, including NAG tests etc for acid generation resulting from weathering and oxidation of sulfide tailings;
f. Collaboration with professionals from industry and academia to evaluate environmental risks of the tailing areas and applicable mitigation criteria.
a. Experience in petrographic documentation of ore-bearing samples, and analytical work in a cleanroom geochemical laboratory
b. Experience in EPMA, SEM analysis, Raman spectrometry, and ICP-MS measurements of minerals and rocks
c. Experience in interpreting multi-disciplinary, geological and geochemical datasets from complex geological areas
Applications can be submitted only online by following the indications reported at the University of Bologna website (Ref. 6552. See "Attachment 41"):
Applications from female candidates are strongly encouraged.
Expected start date: End of December 2021
Application deadline: 03/11/2021
Fixed term for 3 years
Full-time - 40 hours a week
For further information please contact:
Dr. Paolo S. Garofalo
University of Bologna
Department of Biological, Geological and Environmental Sciences
Phone: +39 051 2094537


Kale started KLM Geoscience in 2014 in Las Vegas, Nevada. He has since grown the company from small scale local surveys to its current state as one of the premier geophysical exploration company's in North America. Kale has utilized a wide range of geophysical techniques in the mineral exploration, offshore oil & gas and National Security industry in the US and beyond.
KLM Geoscience LLC
Caliente, NV 89008
Nick has 17+ years of experience in the geophysical exploration industry ranging from Crew Chief to Operations Manager of some of the largest geophysical companies in North America. He has successfully completed projects on 6 continents, using nearly every geophysical method. Nick joined KLM Geoscience in 2019 and has played an integral part in our success.


We demonstrate the use of centrifugation for efficient separation of colloidal gold nanorods from a mixture of nanorods and nanospheres we elucidate the hydrodynamic behavior of nanoparticles of various shapes and illustrate that the shape-dependent drag causes particles to have shape-dependent. Cyanide is a naturally occurring chemical that is found in low concentrations throughout nature including in fruits, nuts, plants, and insects it has been used by the mining industry to separate gold and silver particles from ore for over 120 years with proper management, cyanide can be used. Read separation of gold free essay and over 88,000 other research documents separation of gold the industrial separation process that i have decided to do is gold separation gold separation can be done in a. Indian journal of chemistry vol 44a, march 2005, pp 531-534 separation of gold and silver using a chelating resin - thiosemicarbazide incorporated amberlite irc-50. Shape separation of gold nanorods using centrifugation vivek sharmaa,1, kyoungweon parka,2, and mohan srinivasaraoa,b,c,3 aschool of polymer textile and fiber engineering, bcenter for advanced research on optical microscopy, and cschool of chemistry and biochemistry.
Shape separation of au nanoparticles was achieved by a facile centrifugation monodispersed au nanoparticles and ultrathin au nanowires were obtained via separation. This machine may largely increase world's gold output new york herald (sunday, december 9, 1900, fifth section) p 6 possibilities of gold separation, it does not seem necessary to wait for their commercial perfection before announcing a new era in. Density gradient separation of gold nanorods using the new avanti jxn centrifuge & js-2415 swinging bucket rotor abstract gold nanoparticles have enjoyed increasing popularity. He saw no merits to save him, other than the power of his rebbe and his good deeds of charity. Posts tagged 'chemical separation it would shake, causing the gold particles to separate out against the riffles i found this self-guided tour to be fascinating from a chemistry perspective the mill used a system of physical separations to crush.
Separation of gold metal from potassium gold cyanide salt. The process of separation of concentrate mineral ore in a gold mining in general should be done in a gradual manner, and the function of the separation process is to separate gold ore minerals from mineral impurities or mineral carrier. Gold extraction refers to the processes required to extract gold from its ores by suspending the crushed ore in a cyanide solution, a separation of up to 96 percent pure gold was achieved the process was first.
Extracting gold - extracting gold is a term related to gold learn about extracting gold at howstuffworks. While there are many better methods of purifying gold, the aqua regia method if one of the easiest this can be achieved by small scale collectors the challenges though are there, lack of proper panning equipment makes it difficult for many small scale collectors. Sgs uses a whole range of gravity separation techniques to ensure downstream gravity separation efficiency contact us today.
So far no account has been taken of the loss of gold which is contained in pyrites, as it has been assumed that these are saved by concentration if they are valuable, and this subject is dealt with in earlier nevertheless, as this gold comes under the head of non-amalgamable gold, its physical.
Purification and size-based separation of nanoparticles remain significant challenges in the preparation of well-defined materials for fundamental studies and applications diafiltration shows considerable potential for the efficient and convenient purification and size separation of water. Chapter 15 the chemistry of the extraction of gold mj nicol, ca fleming and rl paul 1s1 general principles 1511 the chemistry of gold compounds. Chemical separation of gold from black sand - oct 25th separation of gold from black sand - crushergooglecom black sand gold separation, you can buy various high quality black sand gold separation products from global. Full-text (pdf) | a study has been carried out on the separation of gold, iridium, palladium, rhodium, ruthenium and platinum in chromite samples and their quantitative determination using inductively coupled plasma atomic emission spectrometry (icp-aes) the dissolution condition of the minerals. Processing flow chart of gold which then developed with gold mining wave table, and followed by gravity separation method using the amalgamation process with the capture of mercury gold separation process in the mining. Floatation involves the separation of gold from its ore by using certain chemicals and air the finely ground ore is dumped into a solution floatation, cyanidation, and the carbon-in-pulp method are 3 processes used to refine gold they can be used alone or in.


There are international mining and drilling companies worldwide. Mining for coal, precious metals and minerals has been going on for hundreds of years and has been a very lucrative business for many individuals and companies. Drilling for oil and gas or to get to specific mines has been just as lucrative over the same timeframe. While this type of business is crucial to our well being there have been many environmental groups to step in along the way and question practices and policies. The cause and effect of this business has especially been a hot button when major catastrophes like the BP Oil Spill happen. But despite whatever opposition may be out there, the mining and drilling business is necessary. On a more localized level it helps create railroads, pipelines for water and sewer and more importantly – jobs. In our directory on mining and drilling you will find links to all the breaking industry news as well as information on the top corporations who compete in this vertical. It doesn’t matter if you are into gathering information on the top mining locations for specific gemstones or need a map of where all the oil drilling locations in the Atlantic Ocean are because this directory covers it all. You’ll even be just a single click away from resources on naturally occurring mineral solids, laws and regulations on a state and national level, blasting techniques and anything else necessary to the business of mining and drilling.


Welcome to our cutting-edge course, “Improving the Way We Manage Tailings,” where we will explore the most innovative strategies and best practices in mine tailings management. In a world demanding a safer and more sustainable approach to mining, this course brings together world-renowned experts, including Kimberly Morrison, Ward Wilson, David Williams, Hernán Cifuentes, Emmanuel Pornillos, and José Luis Lara, to guide you on a transformative educational journey.
Throughout this course, we will explore not only the crucial technical and regulatory aspects of tailings management but also how to drive sustainability, safety, and excellence in the mining industry. Let’s embark on a learning journey that takes us to the forefront of tailings management, where safety, the environment, and efficiency converge. Let’s begin this exciting expedition towards a more responsible and prosperous mining future!
Risk Management to Reduce
Credible Failure Modes
Design with Closure in Mind
Tailings Monitoring and New Technologies for Risk Control


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45 years of the federal coal mine Health and Safety Act. (n.d.). Mine Safety and Health Administration (MSHA) | Protecting Miners' Safety and Health Since 1978. https://www.msha.gov/45-years-federal-coal-mine-health-and-safety-act
MacLaury, J. (n.d.).The job safety law of 1970: It's passage was perilous. U.S. Department of Labor. https://www.dol.gov/general/aboutdol/history/osha#:~:text=On%20December%2029%2C%201970%2C%20President,most%20of%20the%20country's%20workers


Over the past several years, China’s near monopolization of the supply of rare earth elements has received much attention in the global media. Less widely reported is the quest to locate and develop alternative supplies. Currently, an Australian firm is building a rare earth refinery in Malaysia to process radioactive ore from Western Australia. In late January 2012, Malaysia granted a license for the project to proceed, despite protests from local environmentalists. Estonia is now extracting rare earth oxides in sizable quantities from mine tailings; according to a January 27 press release, “The US-incorporated producer of rare earth metals Molycorp Silmet, based in northeastern Estonia, may soon become the world’s largest producer of niobium, a rare earth metal used in electronics, aviation and energy production.” According to the Wikipedia, France is currently setting up two factories to recycle rare earth elements from electronic waste.
Last summer, another report indicated that rare earth minerals are abundant in “deep sea mud” in parts of the Pacific. The report further claimed that these deposits “are also much higher in heavy rare earth elements — the kind that are more important in technology products — than those in China.”
More recently, the Australian firm Kimberley Rare Earths announced what could be a massive new ore discovery in western Mozambique. The complexity of rare earth deposits is evident in the news release: “A sample [was] found to comprise major xenotime and minor monazite and zircon. In addition to yttrium, the xenotime shows appreciable dysprosium and erbium.”
Meanwhile, MarketWatch reported in mid-February that, “Over the last month Rare Earth stocks have outperformed the broader market by a large margin as demand for the 17 elements continues to skyrocket.” The same article mentions new rare earth mining projects in Alaska, British Columbia, and Wyoming.


Kevin Pine | email@example.com | June 8, 2018
It is midday in the mountains and several people are working in a cool California river. One man is digging into the river bank and loading what he has dug into a long metal channel he placed in the river. He takes brief breaks to remove large rocks that are obstructing the carefully created consistent water flow within. Another kneels at the riverbank methodically dipping a pan of dirt in and out of the water. After awhile, he stops moving his pan and uses tweezers to place a small metallic object from his pan into a glass vile.
What these people are doing is gold prospecting, but they are not prospecting during the famous California gold rush of 1849, but rather right now in the twenty first century. Although many people are aware of the important role that gold extraction played in California’s history, many people are less aware that it’s still a common occurrence in the rivers and streams of the Sierra Nevada foothills.
Unlike the original gold rush of 1849 however, many of today’s prospectors did not initially seek out gold prospecting, but instead found it circumstantially. Electrical engineer, Eric Verploo, describes discovering gold prospecting on family trips. “We used to go to a cabin that my family owned in Colorado every summer, and it was in gold bearing country” Verploo said.
Brad Mattson, current chairman of Siva Power and long time Silicon Valley entrepreneur, describes a similar experience saying, “It was somewhat accidental”. However, people don’t always stay excited about gold prospecting after trying it. Those who do stay excited are commonly said to have caught “gold fever” which in Mattson’s experience was “actually kind of real”.
Today, there are a variety of ways that people gold prospect including hard rock, metal detecting, and placer mining. Hard rock mining and metal detecting are much like the way they sound. In hard rock mining, prospectors dig in mine shafts looking for gold directly in veins. Metal detecting is when prospectors use metal detectors to find larger pieces of gold in gold bearing areas.
The most common type of gold prospecting in California is placer mining, where gold that has been moved from its source by natural erosion is recovered from material such as sand and gravel. Placer mining is most common in rivers, streams and their surrounding areas.
The primary way that gold is recovered is through the use of methods and equipment that utilize gold’s incredibly high density. For example, panning works by shaking gold to the bottom of the pan and gradually removing layers of lighter material. Sluices, which consist of a channel with riffles over which water flows, also utilize gold’s density by creating currents that wash away lighter material while the heavy gold sinks to the bottom.
Unlike during the 1849 gold rush, the vast majority of gold prospecting that happens in California today is not done to make a living, but rather, as a hobby. The main reason why this is the case is because gold prospecting on a small scale is not nearly as lucrative as it has been in the past due to the rivers having been worked heavily by prospectors for years.
Despite the fact that it is difficult to make a living off of the gold you can find prospecting, people still make a living off of gold prospecting in other ways. One person who is a great example of this is Gary Thomas, the owner of The California Gold Panning company in Jamestown, CA.
Thomas says he can “run anywhere from 300 groups a year” but when it comes to profiting off of the gold itself he says “honestly in this day and age you’d be better picking up aluminum cans.” Even though running gold tours can be lucrative, it is often challenging to obtain the required permits says Thomas.
Despite the fact there is less money to be made from gold in California then there has been in the past, prospectors still find gold dust and flakes and sometimes even sizable gold nuggets. Mattson describes a nugget as something that “has some three dimensional character to it.” Thomas finds nuggets relatively often, describing his biggest as “about the size of a dollar coin, kind of a jagged edge quartz rock with the gold peppered all through it”. Eric says that he even “found enough gold to make my wife’s wedding ring”
Similar to back in the day, it is not hard to get started gold prospecting. Mattson recommends just starting out with a pan and some instruction. Companies such as Thomas’s also allow you to learn how to gold prospect and get experience without having to invest in property or equipment. Mattson also points out that gold prospecting clubs are a great way to gain experience and access to property without spending too much. He said, “The club is a pretty good way to move to the next level without having to make a huge commitment on property and equipment yourself”.
Despite the fact that the California gold country has been worked for over a century, gold prospecting in the state is not going to end any time soon. With more gold being eroded from hard rock sources replenishing the streams all the time and new prospectors “catching gold fever”, gold prospecting is going to remain present in California for many years to come.


|Lowest Price||৳ 16,000|
|Updated||20 days ago|
|Seller Location||Dhaka, Bangladesh|
The 3-in-1 test kit is a sand content test, grout gravimeter and the slurry viscometer can be operated. Ideal for measuring mud sand content in any well or laboratory you use this device. It is determined by the volume of the slurry after filtration through the screen and is expressed in terms of percentage. The time needed for the 500mm3 slurry to flow out of the viscometer is used to calculate it in seconds.


In the dynamic world of mining, where precision and accuracy can make or break a project, land surveyors are the unsung heroes working diligently behind the scenes. These professionals play a pivotal role in ensuring the success and sustainability of mining operations by providing crucial data and insights that guide every step of the process.
Land surveyors are responsible for accurately mapping and measuring the terrain, mineral deposits, and property boundaries in mining areas. Their work begins long before any excavation equipment is brought in, as they meticulously assess the topography, soil composition, and geological formations. This information is essential for selecting optimal mining sites and developing efficient extraction plans.
During the mining operation itself, land surveyors continuously monitor and update maps, ensuring that activities remain within permitted boundaries and comply with environmental regulations. Their precision helps prevent encroachments on neighbouring properties and minimizes the risk of environmental damage.
Moreover, land surveyors are instrumental in managing safety hazards by identifying potential risks such as unstable ground conditions or subsidence. Their data enables engineers to design appropriate support structures and ensure the safety of workers.
In summary, land surveyors are the unsung heroes of the mining industry. Their meticulous work not only facilitates efficient and responsible resource extraction but also contributes to the safety and sustainability of mining operations. Without their expertise, the mining industry would undoubtedly face significant challenges in navigating the complex terrain of mineral exploration and extraction plans. To explore other industries where land surveyors play a vital role, read here.


Carlin-type gold deposits are one of the most important gold mineralization styles in the world. Despite their economic importance and the large volume of work that has been published, there remain crucial questions regarding their metallogenesis. Much of this uncertainty is due to the cryptic nature of the gold occurrence, with gold occurring as dispersed nanoscale inclusions within host pyrite rims that formed on earlier formed barren pyrite cores. The small size of the gold inclusions has made determining their nature within the host sulfides and the mechanisms by which they precipitated from the ore fluids particularly problematic. This study combines high-resolution electron probe microanalysis (EPMA) with atom probe tomography (APT) to constrain whether the gold occurs as nanospheres or is dispersed within the Carlin pyrites. APT offers the unique capability of obtaining major, minor, trace, and isotopic chemical information at near-atomic spatial resolution. We use this capability to investigate the atomic-scale distribution of trace elements within Carlin-type pyrite rims, as well as the relative differences of sulfur isotopes within the rim and core of gold-hosting pyrite. We show that gold within a sample from the Turquoise Ridge deposit (Nevada) occurs within arsenian pyrite overgrowth (rims) that formed on a pyrite core. Furthermore, this As-rich rim does not contain nanonuggets of gold and instead contains dispersed lattice-bound Au within the pyrite crystal structure. The spatial correlation of gold and arsenic within our samples is consistent with increased local arsenic concentrations that enhanced the ability of arsenian pyrite to host dispersed gold (Kusebauch et al., 2019). We hypothesize that point defects in the lattice induced by the addition of arsenic to the pyrite structure facilitate the dissemination of gold. The lack of gold nanospheres in our study is consistent with previous work showing that dispersed gold in arsenian pyrite can occur in concentrations up to ~1:200 (gold/arsenic). We also report a method for determining the sulfur isotope ratios from atom probe data sets of pyrite (±As) that illustrates a relative change between the pyrite core and its Au and arsenian pyrite rim. This spatial variation confirms that the observed pyrite core-rim structure is due to two-stage growth involving a sedimentary or magmatic-hydrothermal core and hydrothermal rim, as opposed to precipitation from an evolving hydrothermal fluid.