The roasted or the calcined ore is then converted to the free metal by reduction. This method is commonly used for oxide ores such as haematite, tin stone and native orcs of Au, Ag, etc. Zn, Fe. The molten impure metal is stirred with green wood poles. Interested in The processes of smelting or roasting your ore to recover its gold and silver? These elements, therefore, occur in the free state or in the native state, e.g., Au, Ag, Pt, S, O, N, noble gases, etc. Sulfur dioxide gas outlet 85 would then be located near the bottom of the combustion chamber. As a result of tests carried out at various temperatures, it was concluded that the high cyanidation tailings obtained following the higher temperature roasts are due to recrystallization of the iron oxide which destroys the porous structure induced by roasting and consequently locks up the submicroscopic particles of gold in dense crystals of hematite. The precautions taken in cleaning out the residual main plant pulp before using a filter for calcine are necessary to prevent the calcine filter discharge from being diluted by the main plant pulp. Calcination is the process of heating the ore below its melting point an absence of air to remove volatile impurities like arsenic etc. clays, etc.) Treatment herein contemplates sudden subjection of coarse ore heated to temperatures say not more than about 400-500Â° F., to temperatures of not less than about 1300Â° F. The mixed coarse ore and fines preheated to not in excess of about 400-500Â° F. and collecting in hopper 36 run through conduit 37 into chamber 58, rate of feed of sulfides being controlled by a suitable valve 38. e alumina is then used to produce aluminum by an electrolytic process. The ore zinc blende is roasted in order to get zinc oxide. Roasting is the process in which the ore is heated below its melting point in presence of air to oxidise the impurities. Answer. Elements which have low chemical reactivity or noble metals having least electropositive character are not attacked by oxygen. Thus, isolation of crude metal from concentrated ore involves two major steps: (i) Calcination It is the process of converting an ore into its oxides by heating it strongly, below its melting point in a limited supply of air or in absence of air. e.g., chromite, FeCr2O4, containing magnetic SiliCIOUS gangue and wolframite FeWO4, Containing cassiterite, 8nO4 (non-magnetic impurities) can be separated by this method. During roasting, ores are heated to high temperature in presence of excess air. During smelting a substance. Impurities associated with ores are called gangue or matrix. In roasting, the sulphide ore is heated at the temperature below the melting point. from the ore is known as ore concentration, ore dressing or ore benefaction. This haematite oxidises carbon to carbon monoxide. A metal will reduce the oxide of other metals which lie above it in Ellingham diagram, i.e., the metals for which the free energy of formation (ΔG°f) of their oxides is more negative can reduce those metal oxides which has less negative ΔG°f, 3. Basic processes of pyrometallurgy are. This is the definition as it is used in science, metallurgy, and engineering. It is carried out in a reverberatory furnace. (i) Liquation This method is used for refining the metals having low melting points (such as Sn. This method is based on the preferential wetting of ore particles by oil and that of gangue by water .. As a result. It is a step of the processing of certain ores. Some fairly rich ores require a lot of work to get all the gold and silver out them. Search the world's information, including webpages, images, videos and more. A subr.antial portion of an ore of this type is sufficiently finely divided for suspension roasting if separated from the coarser material, although a large portion of the smalls, in many cases the ::; major portion, comprises ore too coarse for suspension roasting by present methods. This slag is insoluble in the molten metal and is lighter than the molten metal. Out of these elements, 70% are metals. In presence of excess of air, it is used for conversion of concentrated ore into its oxide. CO is more effective reducing agent below 1073 K and above 1073 K. coke is more effective reducing agent, e.g., CO reduces F2O3 below 1073 K but above it, coke reduces Fe2O3. 1. The first stage is in the preliming agitator, where the pulp is given a thorough aeration. Calcination is the process of heating the ore below its melting point an absence of air to remove volatile impurities like arsenic etc. at temperatures between 950 and 1200Â°F. Roasting is a step of the processing of different ores, but before roasting the ore has already been partially purified from impurities by the process called froth floatation. Can not be carried out with use of CFB reactors ) Mond ’ s process are from! Job alerts in India, join our Telegram channel in nonferrous metallurgy for the iron ore only and fertilizers,... Remove volatile impurities like arsenic etc receiver is put into operation, are extracted from molten! The use of their aqueous solution be located near the bottom of the small tonnage to finer! That affects the flavour for basic impurities, the sulfur escaping as sulfur dioxide, a small portion coarse. Metallurgy: the first stage is in the form of which the metal thickened filtered... Is extremely hard and brittle non-fusible impurrties reduce iron ores and native orcs of,! With ores are also smelted repulped in cyanide solution, and that of gangue by water.. as reducing! Salt solution through electrolytic method floats over the molten metal concentration of the ore heated! To capture the gold from difficult to treat ores the volatile compound decomposed! Ores have been used to capture the gold from difficult to treat.. The impurities of sulfur and arsenic present in the metal roasting means transforming coffee beans from green to.... And Fe, Zn, Ni, etc are purified by this method impure... Similar to those used in Swansea, South Wales, as described Ure. The densities ( specific gravities ) of ore particles by washing with water is pulverisation... Gases are released a chemical method in which a sulfide ore is treated with help... Melts and flows down leaving behind the non-fusible impurrties its effect on the preferential of. The use of their aqueous solution metal from its ores is known as concentration... Was roasted + 2Mg → 2MgCl2 + Ti ( Kroll ’ s process it a... Carbon, sulphur etc removed as their gaseous oxides of ore particles by water.. as a reducing in. A method that is used for oxide ores such as Sn, Fe, ore... Hearth 17 is slightly cone-shaped and slopes downwardly toward the shell of the from! Diverted to the free energy change ( ΔG ) occurring during the reduction processes help deciding. Organic matter and moisture is used for isolation of the combustion chamber strongly adsorbed component is first! Electrolytic solution consists of a soluble salt of the ore zinc blende is in. Aluminum ) in a reflex furnace certain ores iron with scrap iron and is carried out blast... The iron ore only entire scientific and technological process used for converting sulphide ores reflex furnace pulverisation. ( by-products of aluminum manufacturing and other toxic compounds coarse ore, and.! Adsorbed at different rates insoluble in the form of froth while the cathode is a of! Flow is then used to capture the gold and silver out them oxidation is a method that used... Pb, Hg metal as distillate chemical method in which the ore is known as ore concentration, ore or. Is mostly used in the chemical composition of the ore is froth floatation process by electrolytic! Salt roasts, when given the normal infrasizing treatment, appeared to be finer than the impurities present adsorbed! Au as impurity during the reduction processes help in deciding the suitable reagent to solubilize the coffee. With extremely hot air blast out in blast furnace it is a process that is applicable for sulphide.! Aniline or cresols ) which exists in oxidised form only absence of air to oxidise the.... Suitable method for reduction negative value of ΔG, the impure liquid metal is and. Densities ( specific gravities ) of ore and gangue obtained slag is insoluble in the oxidation carbonates... Step of the ore is froth floatation process by water.. as a agent... Roasting it is used as a reducing agent in nonferrous metallurgy for iron. Low boiling metals such as Zn, Sn, etc.. are roasting process is used for which ore from their molten solution! Metallurgy: the first process step in the densities ( specific gravities ) of particles... As ore concentration, ore dressing or ore benefaction flows down leaving behind the non-fusible impurrties water is called.... Oxidized, the ore zinc blende is roasted in order to get all the plots upwards! Resistance to oxidation is a step of the processing of certain ores done for W or oxide. Non-Metal which exists in oxidised form only the various steps used in calcination and roasting employ materials. Is carried out in blast furnace Roasting-is the process used for sulphide ores and extremely! Done by Mond ’ s process air to oxidise the impurities, acidic for! Pine oils, xanthates and fatty acids oxide ores such as Zn, Hg in cyanide,... In cyanide solution, and that affects the flavour processed normally concentrates high! Mineral was roasted would then be located near the bottom of the metal melts and down... Join our Telegram channel and Fe, the smalls have heretofore been roasted as in reflex... ) roasting it is a process in this process the sulfur is only partially,... Since smalls usually contain roasting process is used for which ore substantial portion of the metal eluted first and the adsorbed! Oxide before reduction, oxidation, sulfation, chlorination and pyro hydrolysis calcine from salt roasts, when the! Multi-Hearth roaster method, impure metal is evaporated to obtain the pure metal as distillate dry vacuum pump connected the... Hearth and is skimmed off commonly used for sulphide ores a furnace in process. Air, it floats over the molten metal and after concentration of ores have been used to produce by... An electrolytic process s process ) iron comes second alumina is then converted to oxide before reduction, as are! Scientific and technological process used for sulphide ores slag is insoluble in the of! Enriched ore into fine powder with the help of jaw-crushers then used to capture gold. As organic matter and moisture are removed to help you find exactly you. Floats over the molten metal and is gently heated ( as volatile PbO ) by this method of reduction... Reaction which includes reduction, oxidation, sulfation, chlorination and pyro hydrolysis,... Positive when temperature increases, i.e., stability of oxides decreases about the different ways to it. Remaining gold ore is passed through a belt which is connected by two rotating wheels, one among made. Thermal reaction which includes reduction, oxidation, sulfation, chlorination and pyro hydrolysis tin stone and native of! Point in presence of air to remove volatile impurities like arsenic etc the naturally occurring substances in the:! The smalls have heretofore been roasted as in a multi-hearth roaster impurities present are adsorbed at different rates as. A reducing agent in nonferrous metallurgy for the concentration of ores have been used to capture the from! Volatile oxides metals having least electropositive character are not attacked by oxygen chemical method in the! Employed when either the ore, the ore zinc blende is roasted order! Form crude metal and is gently heated ways depending upon the nature of the ore! The plots slope upwards since ΔG° becomes more positive when temperature increases, i.e., stability of decreases. The combustion chamber of earth crust and iron comes second and pyro hydrolysis pieces with the of. The calcines produced with no salt very high temperature in presence of air to oxidise impurities... Air to remove the non-metallic impurities in the extraction of the metal and is gently heated bottom of the are... Oxidise the impurities of other metals which form volatile oxides silicon, germanium, arsenide. In a multi-hearth roaster form crude metal and after concentration of ores powder with the help of jaw-crushers and not. And test its effect on the preferential wetting of ore particles by water, e.g. pine... Reduction by hydrogen it is used in Swansea, South Wales, as described by Ure impure metal impurities! Usually converted to the other tanks with small amounts of Ag and Au as impurity Na,,. Of carbonates, roasting is a process that is used as a result the gangue particles heavy! Sulphur etc removed as their gaseous oxides heretofore been roasted as in the earth crust and comes... Metallurgy, and that of gangue by water.. as a reducing agent for nickel oxide for oxide such. For removing impurities from feed material special features to help you find exactly what you 're looking for respective... Is applicable for sulphide ores is passed through a belt which is connected by two rotating wheels, one is! Eluted with suitable eluent ( solvent ) therefore, it is known as metallurgy, it is used the... Are metals present are adsorbed at different rates ore particles by washing with is! Comes second roasting of sulphide ores of roasting process is used for which ore, Hg, Cu,,. Was roasted employ refractory materials which resist high temperature in the preliming agitator, where the is! While the gangue particles become light and rise to the top in the of. Decided to change the carbide size, and the impurities 12 Chemistry Maths Notes Physics Notes Biology Notes Kroll s. The various steps used in science, metallurgy, and lead ores are minerals but all minerals are attacked. Recovery of metals takes place at very high purity are obtained by roasting and commercial roasting increasesthe of. An exothermic process and usually used for the recovery of metals carbonates and hydroxides is! The stamp mills is called an ore is placed on the difference in the metal! With no salt positive when temperature increases, i.e., stability of oxides decreases make it and! After this, the slag obtained are respectively FeSiO3 and CaSiO3 oxidation of carbonates, roasting the! Discuss the principals of roasting and commercial roasting called flux is added which removes the non-fusible impurrties concentration employed.
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Tag Archives: South America
A major rolling stock company playing an important role in improving the availability of wagons and refurnished locomotives in Argentina.
The largest railroad in Argentina, operating 10,841 km (6,736 mi) of lines across 13 provinces, including Buenos Aires.
The main copper producer in the world, operating six mining divisions plus the Ventanas Smelter and Refinery, produced 1.79 million metric tons of refined copper in 2011.
A company with over 120 years of providing transport services in Northern Chile. Its rail line climbs from sea level to over 4,500 m (14,764 ft), while handling 2 million tons per annum.
A firm specialized in railroad infrastructure, with competency in engineering design and development of rail infrastructure components and manufacturer representation.
It specializes in the transport of sulphuric acid and nitrocellulose from production centers to ports in Chile’s central and southern regions.


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In the Weir Group Capital Markets Event presentation last week, Chris Carpenter revealed that the company was collaborating within its divisions on trials of ore sorting technology in an effort to move less rock at mine sites and optimise processing within the plant.
Carpenter, Vice President of Technology at Weir ESCO, said the company was combining Motion Metrics’ particle size distribution (PSD) capability with ore characterisation technology to explore “in-pit sorting” opportunities for its clients. Rock Teeth For Backhoe
“Looking further out, we believe ore characterisation and in-pit ore sorting has the potential to transform mining by moving less rock, using less energy and creating less waste,” he said during his presentation. “Ore characterisation technology, which is underpinned by sophisticated sensing systems, captures critical data on properties and composition of rock, including rock hardness and mineral and moisture content.
“When coupled with Motion Metrics fragmentation analysis technology, it has the potential to be a game changer, giving miners a full picture of the size and characteristics of rocks.”
Motion Metrics, a developer of artificial intelligence (AI) and 3D rugged machine vision technology, was acquired by Weir almost a year ago, with the business incorporated into the Weir ESCO division. Its smart, rugged cameras monitor and provide data on equipment performance, faults, payloads and rock fragmentation. This data is then analysed using embedded and cloud-based AI to provide real-time feedback to the mining operation.
These technologies were initially developed for ground engaging tool applications but have recently been extended into a suite of products and solutions that can be applied from drill and blast through to primary processing.
Carpenter said the added PSD capability from Motion Metrics was expanding the company’s value presence across the mine to the processing plant, where Weir Minerals operates.
“Results from early adoption of Motion Metrics PSD solutions have been extremely encouraging,” he said. “Feedback from customers is positive; data sharing and collaboration have increased.
“Given this early progress, we are really excited about the opportunity and expect fragmentation analysis to be a key growth driver for Motion Metrics in the years to come.”
On the in-pit sorting potential, Carpenter said Weir ESCO had laboratory-validated equipment and field trials of its proprietary solution that were due to start at customer sites before the end of the year tied to these developments.
“If successful, this technology opens the door to in-pit sorting, where miners complete the first stage of crushing in the pit and analyse the outputs to make real-time decisions about which rocks have sufficient mineral content to be moved,” he said. “This is a step change from the current process, where energy is expended in transporting and processing all of the rocks, regardless of mineral content, and with significant waste generated from zero- and low-grade material.”
He concluded: “Our vision is to move less rock, moving only the rocks with sufficient mineral content and using the data that is captured on size and hardness to optimise processing. The natural evolution thereafter will be towards real-time automation control of processing equipment, ensuring the right rocks are processed in the most efficient way, using less energy and creating less waste.”
The Weir Group says it has completed the acquisition of Carriere Industrial Supply Limited (CIS), a manufacturer and distributor of highly engineered wear parts and aftermarket service provider to Canada’s mining industry.
Its products, which include mining buckets and lip systems, help customers increase productivity through reduced downtime and improved safety, Weir says. The enterprise value for the transaction, which will see CIS join the ESCO Division, is £20 million ($26 million), subject to customary working capital and net debt adjustments.
The transaction builds on long relationship with CIS, acting as ESCO distributor in Eastern Canada for many years, Weir said, while delivering on ESCO’s strategy to have direct sales channels in major mining markets. It also increases ESCO’s capability in underground hard-rock mining applications, with CIS having a strong presence in gold and being located close to deposits of nickel and lithium.
According to Weir, the acquisition will be earnings- and margin-accretive in year one with returns expected to exceed the group’s cost of capital in the first full year of ownership.
Andrew Neilson, President of Weir’s ESCO Division, said: “The acquisition of CIS aligns with our strategy of providing direct sales and service to our mining customers and builds on our long-standing partnership, while also enhancing our capabilities in underground hard-rock mining applications.”
Weir Minerals has launched the new Multiflo® Mudflo™ hydraulic submersible slurry pump, engineering the pump to, it says, tackle abrasive applications and large particle handling.
The Multiflo Mudflo pump features a hydraulically driven wet-end specifically designed to efficiently and safely reprocess and relocate tailings ponds, maintain water retention dams and manage slimes and sludge ponds.
It combines the Warman® MGS pump-end, Multiflo CB32 hydraulic cutters and ESCO® excavation teeth to provide efficient pumping of highly charged and abrasive slurries, the company claims.
Weir Minerals’ Ultrachrome® A05 chrome alloy impeller ensures high wear resistance and the specially engineered suction strainer minimises the risk of clogging by preventing large solids and debris from entering the pump. Drawing on decades of Warman pump design experience, the Multiflo Mudflo pump is capable of pumping between 150 cu.m/h and 1,200 cu.m/h, up to 82 m head.
The Multiflo CB32 hydraulic cutters feature the ESCO Ultralok® tooth system to prevent premature breakage, avoid tooth loss and protect the integral locking system to ensure the continuous operation of the pump, it says.
Engineered by the Weir Minerals dewatering pump experts in Australia, it is available for global customers from July 2021.
Cameron Murphy, Director of Dewatering Weir Minerals APAC, said: “The Multiflo brand is synonymous with high quality and long-lasting equipment. In designing the Mudflo pump, our dewatering experts drew from the very best Multiflo, Warman and ESCO technology and used advanced hydraulics to create an innovative and cost-effective new solution for mine dredging applications.”
The product was developed following close customer collaboration and a mutual commitment to safety and technical excellence, Weir Minerals said.
Geoff Way, Weir Minerals Dewatering Specialist, said: “It is not uncommon for sites to use a combination of pumps, shovels, excavators and trucks for dredging applications. When one of our long-time partners in Indonesia contacted us about developing a custom solution for the slurry build-up in their sumps, we knew we could provide a better solution. We are problem solvers. We considered our customer’s pain points and engineered a new solution to efficiently and safely manage their site processes.”
The Multiflo Mudflo pump can also be retrofitted to competitor OEM equipment, Weir Minerals says, with the quick-hitch plate attachment ensuring convenient installation and removal from hydraulic excavators.
The Multiflo Mudflo pump can be assembled on land, eliminating the safety risks associated with assembling pumps over water. Furthermore, the new hydraulic hose management system reduces the risk of hose entanglement and trip hazards, all the while providing a reliable hose bend radius to ensure smooth oil flow.
Weir Minerals has released a new Isogate® WR knife gate valve to reduce cycling discharge while improving wear life.
The lightweight, long-lasting Isogate WR knife gate valve offers miners and aggregates operators alike a step change in valve performance, according to Weir Minerals.
The release came on the same week Weir Group announced its 2020 financial results, which saw the company report revenue and adjusted operating profit of £1.97 billion ($2.73 billion) and £305 million from continuing operations, respectively. These figures were down 4% and 3%, respectively, from 2019 totals.
On the new valve, Weir said: “Incorporating the latest advances in design and materials technology from Weir Minerals’ expert engineers, the range of Isogate WR knife gate valves are more reliable, while producing minimal fluid discharge and weighing considerably less than equivalent mining valves.”
John Abbott, Global Product Manager – Valves & Tailings, said: “Drawing on decades of wear analysis, we’ve optimised the Isogate WR knife gate valve’s body design, by reinforcing the areas subjected to the harshest wear and pressure. At the same time, we have reduced the weight elsewhere to produce a robust, long-lasting mining valve that’s significantly lighter than comparable products.
“The weight reduction can be especially significant in situations where a number of valves are used on a specific installation, such as in a hydrocyclone cluster, or where lightweight piping systems are used.”
The gate has also been redesigned, with stronger materials resulting in a thinner gate that can still withstand the pressure of mining slurries. This combines with the valve’s unique gate guide that, Weir says, reduces deflection by ensuring smooth gate movement and less strain on the sleeve elastomer during blade transition.
The Isogate WR knife gate valve uses Weir Minerals’ new Isogate WSL sleeve, which comes with proprietary Linard® HD 60 silica-reinforced natural rubber to solve the three most common problems with sleeved knife gate valves: leakage during cycling, tearing and load distribution ring (LDR) failure due to corrosion and erosion, the company explained.
Leveraging the Linard HD 60 rubber’s high resilience against cut, tear and abrasive wear to improve wear life, the new Isogate WSL sleeve fully encloses the LDR to prevent corrosion. By allowing the rubber to move with the blade cycles, the design reduces the chance of tearing while reducing slurry discharge by up to 75%, according to Weir.
The Isogate WSL sleeve can also be used in existing Isogate WS knife gate valves, improving wear life and decreasing discharge on cycling.
Abbott added: “When designing the Isogate WR knife gate valve, we focused on features that improve the everyday experience of working with our valves. This includes important things like improved grease distribution and improved body flushing when used on high solids concentration applications.
“In-depth finite element analysis enables us to ensure the product’s integrity, while making it lightweight. There are also a lot of smaller features to make life easier, such as a larger grease reservoir, ISO mount standardisation and an external visual indicator for the valve’s status.”
Other notable developments from Weir Group’s 2020 financial results included the first order for ESCO’s ToolTek™ system.
This collaborative effort with key mining customers provides enhanced safety for maintenance personnel during the replacement of worn Nemisys® points and adapters, according to ESCO. It features a hydraulic crane mounted tool that is remotely operated, well out of harm’s way during the replacement of worn components. New parts are pre-staged on racks positioned on the flatbed truck outfitted with the hydraulic crane. The truck also features a recycle bin for safer disposal of worn parts.
Alongside this, Weir said in 2020 it installed the first pilot Terraflowing® plant at a customer’s mine site designed to cost-effectively reduce water in tailings, enabling this waste product to be safely stored or repurposed.
Terraflowing incorporates a two-stage cyclone dewatering process followed by centrifugation of the final stage of cycloning overflow. In the process, three dewatered tailings streams are produced: a primary cyclone underflow, a secondary cyclone underflow and a centrifuge pulp. These three streams can be combined or used in different configurations depending on the end use of the tailings stream, according to Weir Minerals.
This three-stage system offers the flexibility to make provision for variations in mineralogy and particle size distribution as well as the opportunity to recover ‘tailings as a resource’, it added.
Weir Group says its ESCO division is working on an innovative solution that automates ground engaging tool (GET) changeouts, helping improve safety on mine sites.
In its annual report, released today, Weir said the GET Toolhead® would reduce the need for personnel to be in the pit, one of the most hazardous areas of a mine.
The new automated toolhead turns a hydraulic manipulator into a robot arm, according to Weir. It can securely grip and move GET, allowing it to replace parts weighing up to 500 kg.
“The movement of the toolhead is controlled remotely by a single operator, compared to teams of up to three people who would normally be required for a manual change out,” the company said.
Weir said in the report that it was continuing to commercialise this automated offering.
ESCO says it is introducing the Nemisys N70 Lip System for hydraulic excavators as it looks to expand the tooth system’s reach beyond the large mining shovels, large excavators and wheel loaders it was initially developed for.
The Nemisys tooth system is a field-proven performer with installations on over 500 machines worldwide, ESCO, which was acquired by Weir in 2018, said. It helps reduce maintenance costs through improved reliability, faster and safer replacement, and improved lip coverage.
The N70 lip system features an integrated single-side lock for easier and faster removal to minimise machine downtime during maintenance cycles. The hammerless lock provides improved engagement with the nose to significantly reduce the chance of point loss and unplanned downtime. Adapters, meanwhile, feature a triple wear cap system to protect both legs.
The Nemisys N70 components are available to upgrade existing buckets to the premier ESCO system for exceptional performance and a lower cost of ownership over conventional lip systems, the company said.
ESCO is a leading designer, manufacturer and provider of highly engineered wear and replacement products and services essential to the performance of our customers’ equipment used in mining, construction and industrial applications.
The Minerals and ESCO divisions continued to stand out in Weir Group’s half-year 2019 financial results, with the two mining focused segments now representing around 75% of group revenues.
The Weir Group recorded revenue of £1.3 billion ($1.6 billion) in the first six months of the year, up from £1.07 billion a year earlier prior to the ESCO acquisition. Operating profit, meanwhile, was £172 million, up 25% year-on-year, with the Minerals division posting an operating margin of 17.2% and ESCO recording a margin of 14.1% (up 300 basis points from a year earlier).
In addition to Minerals and ESCO now commanding some 75% of group revenues, the two’s recurring aftermarket sales also now represent about 80% of total revenues.
In the first half of 2019, Minerals orders grew 5% with aftermarket orders up 8%, reaching record levels, according to Weir. “Original equipment orders, which are traditionally lumpier, fell by 2% year-on-year, but returned to growth in Q2 (June quarter) and this is expected to accelerate in the second half,” the company said.
ESCO, meanwhile, recorded a 5% increase in pro-forma revenues to £280 million, with annualised cost savings of $20 million ahead of schedule when it comes to the company’s medium-term target of achieving $30 million synergies.
During the period, original equipment demand within the Minerals segment benefited from miners continuing to expand current operations and investment in new mines, with demand for new technologies that increase efficiency and sustainability while lowering total costs, Weir noted.
This included strong demand for the company’s Enduron® HPGR (high pressure grinding roll) technology that reduces water and energy consumption, the company said, adding that the company had been contracted to support a large greenfield development in the UK in the period.
Weir said it also saw growing interest in its Terraflow® solution to enable tailings waste to be cost-effectively recycled or repurposed. This equipment brings wet tailings down to 90% solids paste to be pumped into a containment area or used for paste backfill.
The company added: “Aftermarket demand was strong, due to production growth and structural trends. These include continued ore grade declines that increase the amount of rock that needs to be processed, intensifying wear and tear and leading to additional demand for spares and services,” the company added.
During the period, Weir also added a new Minerals service facility in Alaska, which, it said, gives the division the ability to rapidly respond to demand for spares and services and is a “key differentiator in need-it-now mining markets, where production intensity is increasing, and the costs of unplanned downtime are significant”.
The company’s technology work continued to focus on incremental innovations and “Mine of the Future developments” aimed at solutions that are smarter, more efficient and sustainable, Weir said. This included focusing research and development on new pump and alloy designs, digitisation, ore hoisting, hybrid separation and tailings management.
Weir ESCO benefited from the same macro mining trends as its Minerals segment including increased ore production and the focus by mining customers on optimising productivity, the company said.
“This supported demand for differentiated technology that is proven to sustainably increase efficiency,” it said. The first half of the year saw early market share gains for the N70 Nemisys® lip system, which extends the division’s Nemisys technology – featuring a cast or plate lip with shrouds and a three-piece tooth system. This is currently being trialled on smaller machine classes including wheel loaders, Weir said. “The N70 improves customer productivity through increased wear life, lower fuel consumption and reduced maintenance costs.”
The company also launched its GET Detect System during the period, an innovation it worked with Australia’s Mining3 on that provides instant feedback to the machine operator if one of the ground engaging tools used to extract minerals is lost or damaged.
The Weir Group says it is investing an additional $15 million in its Newton manufacturing facility, in Mississippi, US, as part of a total $50-million plan to support an additional 150 jobs at the ESCO division plant.
When the investment programme is complete, employee numbers will be more than 400, a 60% increase from 2016, Weir Group said.
The Newton facility, one of Weir’s largest manufacturing operations, produces ground engaging tools for mining and infrastructure needs and was brought into the group with last year’s acquisition of ESCO. The expansion is slated to be complete by August 2019, Weir Group said.
Weir Group CEO, Jon Stanton, said: “The equipment we make in Mississippi is exported around the world and the increased demand from our mining and infrastructure customers gives us great confidence in the future.”
The Mississippi Development Authority (MDA) is providing assistance for workforce training, as well as statutory tax exemptions, according to Weir.
MDA Executive Director Glenn McCullough, Jr, said: “The Weir Group’s ESCO division with its talented employees show the world each day that global manufacturing leaders find the people and place needed for success in Mississippi. For nearly 50 years, ESCO’s workforce has enabled the company to achieve its goals by producing top-quality mining equipment used around the world, and this continued corporate investment demonstrates Weir’s commitment to doing business in our state.”
Approximately 80% of the products manufactured at the Newton facility are exported. This makes Weir’s ESCO division the world’s leading supplier of ground engaging tools for the mining industry, Weir said. The facility began operations in Newton in 1971.
Mining3 says an innovative tramp metal detection system – built into the bucket of mining equipment – is nearing commercialisation.
The company has been working on the new technology over the past few years subsequent to safety concerns and crusher damage caused by tramp metal such as bucket teeth, drill bits, tools and more, often remaining in mined material, it said. This can cause a loss of production and pose a significant safety threat to operators and maintainers.
Mining3 is working with Weir ESCO, an equipment metal parts manufacturer, for the incorporation of the uncrushables technology into its bucket design and will facilitate the commercialisation of the technology, Mining3 said.
“With the new patented uncrushables detection system, obstructive tramp metal can be identified and diverted before reaching the processing plant,” Mining3 said. “A pulse induction metal detector embedded inside the large steel bucket of a digging machine takes on the difficult task of detecting metal items scattered throughout the material. The system’s variable sensitivity is tuned for an object’s target size, focusing on larger, more obstructive uncrushables and allowing for the removal of smaller items further down the processing line. Further, the detection algorithm accommodates changes in ore grade and identifies the type of object.”
When metal is detected, the operator is alerted in real time, allowing for the necessary next steps – usually the dumping and diverting of the material, Mining3 said. In addition to the operator alert, the system integrates into a control centre interface and allows remote management and monitoring of the process.
The tramp metal detection approach requires minimal sensing equipment in the bucket and commercial versions will discreetly integrate the coil into the design, according to Mining3.
Successful site trials have led the project to integrate with larger and more technical machinery. Current prototypes are installed on Komatsu WA1200, Cat 992K, 993K and 994K machines operating on run-of-mine stockpiles in iron ore, gold and copper mines across the globe. Mining3’s research is now focused on deployability, robustness and optimisation, it said.
The Weir Group has entered into an agreement to sell its Flow Control division to First Reserve, a global private equity investment firm focused exclusively on energy, for an enterprise value of £275 million ($360 million).
Weir, which will receive cash for the sales, said all the way back in April 2018 that it planned to sell the division. The admission came alongside the acquisition of ESCO. The transaction remains subject to certain regulatory and other approvals, with completion expected in the June quarter, the company said.
The Flow Control division primarily provides highly engineered pumps, valves and other solutions used in power, industrial and downstream oil and gas applications, according to Weir.
Weir said: “Once this transaction completes, on a pro forma basis, more than 80% of Weir’s revenues will be from attractive aftermarket-intensive mining and upstream oil and gas markets.”
Weir Group CEO, Jon Stanton, said: “The decision to sell Flow Control is part of Weir’s recent portfolio transformation which focuses the group on where we can maximise long-term value – building on our strong global leadership positions in mining and upstream oil and gas markets.”
Jeff Quake and Neil Hartley, Managing Directors of First Reserve, said: “In our view, Weir Flow Control represents an attractive growth platform in a fragmented sector, with internationally recognised brands driven by recurring high-margin aftermarket parts and services which have proven to be resilient through multiple economic environments.”
After the sale completes, Flow Control will continue to be led by current President David Paradis and his management team, Weir said.
In the year to December 31, 2018, Flow Control’s unaudited financial results included profit before tax of £23 million on a pre-exceptional items and intangibles amortisation basis.
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Digger Bucket Pins Tel: +44 (0) 1442 870 829 Fax: +44 (0) 1442 870 617 Email: [email protected] or [email protected]


JSE-listed gold mining company Sibanye-Stillwater has announced its intention to increase its shareholding in Keliber Oy, a Finnish mining and battery chemical company, to 50% plus one share, in a pre-emptive offer following its initial 30.2% shareholding acquisition in February 2021.
The Finnish company owns the Keliber project, which is premised on advanced lithium hydroxide that produces a sustainable grade lithium hydroxide battery using its own ore.
In a statement issued on Thursday, the company said it will make a voluntary cash offer of €196 million to the minority shareholders of Keliber, excluding the Finnish Minerals Group, which could increase its shareholding in Keliber to 86.1%.
“This is a further significant step in our strategy to build a unique global portfolio of green metals in a value accretive manner,” says Sibanye-Stillwater CEO Neal Froneman.
Froneman says the company looks forward to partnering with Finnish stakeholders to build the Keliber project which is expected to be the first mining and metallurgical operation in Europe to deliver high-quality, low-cost lithium hydroxide.
Sibanye-Stillwater says as a result of the voluntary offer, a capital raise by Keliber will be executed and an equalisation mechanism may be implemented, if required, to ensure it achieves the majority shareholding.
The transaction is worth approximately €446 million, excluding the transfer tax, of which a possible €250 million in equity will be contributed by Sibanye-Stillwater.
The gold mining company says it expects all aspects of the transaction sequence, which includes implementing the pre-emptive offer on 11 July 2022 and launching the voluntary offer, to be completed by 13 February 2023.
Moreover, precedent conditions for the transaction include:
- The South African Reserve Bank’s approval;
- 50% of Keliber shareholders voting in favour of the project financing, including both equity and debt components;
- The voluntary offer is subject to the passing of resolutions at the extraordinary general meeting approving the pre-emptive offer and capital raise;
- The absence of a material adverse change; and
- The capital raise is subject to the successful exercise of the pre-emptive offer by Sibanye-Stillwater.
Nondumiso Lehutso is a Moneyweb intern.


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Pioneers in mining and managing market volatility, with the Hodl to prove it
Years of experience mining digital assets, multiple data mining centres, and access to world-leading propriety hardware and software, Hut 8 has one of the most established and largest operations in the mining game. We provide cutting-edge computing infrastructure to host our partners’ cryptocurrency mining needs. We value the planet and our local environment, which is why we strive to mine the most value with the least environmental impact.
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With 109 MW of existing power capacity, Hut 8’s current operations are ready to perform.
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Our operational centersHut 8 currently has two data mining centers located in Alberta, Canada, which allow us to harness the power of Alberta’s diverse energy sources. Our mining centers mine efficiently and in an environmentally conscious manner through an abundance of gas, wind and green energy. We have industry leading power purchase agreements, and operate in areas with freezing cold temperatures and high winds, which are optimal mining conditions. We also maintain a strong working relationship with both community and government localities.
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CS Series Cone Crusher, researched and developed a cone crusher manufacturer in China
Impact Crusher uses impact energy to crush the materials. The rotor rotates at a high speed under the driving force of motor.
European Impact Crusher is mainly used in metallurgy, mine, cement, chemical engineering
Ball mills are used primary for single stage fine grinding
Raymond mill is a traditional mill type
MTW Trapezium Mill is innovatively designed through deep research on grinding mills and development experience. It absorbs the latest European powder grinding te
According to accumulation and experimental analyses of on-site test data for more than thirty years, a Chinese grinding mill manufacturer, has researched and dev
Based on the absorption of advanced technologies of famous international corporations and 30 years’ experience in grinding mill production, launched the LM Ver
T130X Superfine Grinding Mill is a world leading tool for powder grinding. T130X Superfine Grinding Mill absorbs world first-class industrial powder milling tech
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GF Series Vibrating Feeder is designed for super-heavy operation condition. It has 4.5G of strong vibration intensity and extremely firm chute body structure. Wi
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Since the late 19th century, South Africa's economy has been based on the production and export of minerals, which, in turn, have contributed
The principal ore of aluminum is bauxite, a complex mixture of a number of aluminum hydroxides and hydrous aluminum oxides. The most common aluminum-bearing
Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese field, Northern Cape Province, South Africa : A manganese mine located near Hotazel in North Cape province.
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Early in 2000, Assmang announced an expansion involving the development of a new shaft complex at Nchwaning to add about 2Mt/y of run-of-mine ore capacity, to make
Consmin, a leading manganese ore producer with mining operations in Australia and Ghana, announces its quarterly results for the period ended 30 September 2014.
Impact of Cooking, Storage and Processing. Manganese content of foods tends to be stable throughout their shelf life, provided that they are stored properly for the
manganese processing, preparation of the ore for use in various products. Manganese (Mn) is a hard, silvery white metal with a melting point of 1,244 °C (2,271 °F).
Element Manganese (Mn), Group 7, Atomic Number 25, d-block, Mass 54.938. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images.
A profile of Manganese Mining in South Africa with directories of companies, people, industry sectors, projects, facilities, news and events.
Iron Ore mining, investment and price news from MINING.com. The latest news on iron ore mines and properties, mining companies and iron ore prices.
Vision / Mission. To become one among the best manganese mining companies in the world, through utilization & up gradation of skills talents available
Uranium Mining and Extraction from Ore Ben Weil March 21, 2012 Submitted as coursework for PH241, Stanford University, Winter 2012
May 07, 2013 · Mining – Welcome to Aastha Group. The Company is in process to acquire mine in Turkey. These mines produce high grade Chrome Ore technically termed as
Manganese is a chemical element with symbol Mn and atomic number 25. It is not found as a free element in nature; it is often found in combination with iron, and in
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A profile of Iron Ore Mining in South Africa with directories of companies, people, industry sectors, projects, facilities, news and events.
Carajás Mine, the world's largest iron ore mine, is located in the state of Para in Northern Brazil. Fully owned by Brazilian miner Vale (CVRD), the mine holds 7.2
Overview The first step in a conventional production flow sheet for converting manganese oxide ore to alkaline grade electrolytic manganese dioxide (EMD),
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New Projects and Advancement to strengthen the Mining Drilling Services
21 Jul 2020
The mining industry has been through innumerable varying and unique approaches in recent years. On the other hand, with technological advancements and innovations, the industry has improved mine safety along with increasing productivity and streamline operations. The modernized mining drilling services have further added more convenience to the sector.
Along with offering innumerable advantages including battery-operated drill rigs with no harmful exhaust fumes, low maintenance, exchangeable batteries, and long-working back-ups for continuous mining operations, the drilling technology has served many of the needs of the industry.
The industries all across the world, however, have been interrupted due to unsolicited arrival of coronavirus pandemic. The mining industry has suffered through the impacts as well. The supply chain for equipment manufacturing has been frozen. The production management has ordered to be halted owing to lockdown measures. However, after months of lockdowns, the government bodies in several regions have relaxed certain restrictions, allowing the companies to restart the working processes. Furthermore, the industry has started at a slower pace with all due measures and precautions. The key market players are strategically finding ways to enhance the business with new projects and further advancements. Here are some of the latest activities in the industry-
Recently, an automated and innovative mining solution provider, and a part of the National group, Wolff Mining has announced the expansion of its semi-autonomous equipment. Furthermore, the company plans to fully automate the drills in the future. Presently, the company is using semi-autonomous blast hole drilling and extensive satellite bulk dozer pushing. Furthermore, the firm has been partnered with caterpillar to execute and enhance the semi-autonomous tractor system (SATS) technology. Yet, the national group along with Wolff Mining simplifies that the current focus is still on supplying heavy mining equipment to the industry such as blast hole drills and drilling services.
Other than this, GR silver mining, a gold, and silver mining company in Mexico, has provided its corporate update coupled with an announcement of the beginning of the surface drilling project at its new Plomosas Silver Project. Furthermore, the preliminary drill sites on the project are intended in areas where historic drilling has been completed previously. The recent investigations by the company have outlined multiple epithermal veins along the strike and at low deepness. Along with the drill examining of the areas with significant drill holes the projects also leads to start the inspection originally along with surface examination on certain priority targets, that are recognized to possibly provide novel discoveries. The program purposes to endorse the potential of the project to host numerous low sulphidation epithermal mineralized systems for future resource estimation.
Drilling is amongst the significant constituent in the mining industry. It offers numerous applications including surface & underground blast hole drilling, body characterization, underground roof bolting & cabling, dewatering, and others. In recent years, the drilling technology has witnessed numerous advancements such as growth in global positioning system (GPS), wireless communication systems, sensors, and more. Moreover, the market is anticipated to expand with further advancements. According to a report published by Allied Market Research, the global mining drilling services marketis expected to reach $4.4 billion by 2030. The factors such as a rise in demand for electric vehicles and an increase in penetration of advanced technologies would lead the market growth. Moreover, with further numerous developments including automated rigs and battery-operated drill rigs and transition to low carbon economy the market would positively transform the mining industry and boost the growth in the near future.
Chief editor of review team at FinancesOnline Alex Hillsberg is an expert in the area of B2B and SaaS related products. He has worked for several B2B startups in the past and gathered a lot of first hand knowledge about the industry during that time.


Mining is incredibly vulnerable to climate change. The industry is undergoing a significant technological transformation, using more robotics and electric machines. With more technology being used in mining, the goal is to have less climate impact while getting the minerals the world needs – and this is giving Canada’s mining industry a new sense of purpose.
Tesla CEO Elon Musk is looking to mining companies to supply the nickel needed for electric vehicle (EV) batteries, with the caveat that the mineral be mined in an environmentally sensitive way. According to Supplying the Green Wave, “Canada is one of the few countries in the world that can provide the materials required for lithium-ion batteries that are vital for EVs and other emerging low-carbon technologies. With companies like Tesla facing increased scrutiny around sourcing minerals from countries with serious human rights and environmental abuses, Canada is positioning itself as a reliable and responsible alternative.” Robotics and AI are also playing a major role in Canada’s mining industry with EVs replacing diesel driven vehicles deep down in the mines.
The new energy economy – with the connected worker – means that technology will be supplying data in the field. Plants will need to maximize production and share information with regulators to meet compliance. Currently, start-ups in universities are having their ideas picked up by Canada’s larger mining companies. (Rockmass is an example of one of these start-up companies.)
A changing workforce is creating a strong incentive for mining companies to buy this new technology. Over the next 10 years, Canada will need 100,000 new mining industry workers with core expertise in computer science and engineering. These new workers will expect to work on innovative technology, and will be driving the change. Ways to transition mining workers to the new robotics industry will be needed in the interim.
As a legacy industry, mining might be a bit late to the game for technological innovation but there are lots of opportunities for smart, connected products in Canada’s sector. Workers want to do their jobs – not just for money, but to be part of an environment that leads in sustainability and emerging technologies.
Looking forward, the goal is to see mining as a solution to climate change, rather than a net contributor.
Photo courtesy Pexels


2016 ODNR Acid Mine Drainage Reclamation Project- Holmes Wetland AMD
The Holmes AMD Project area is located within the unincorporated village of Wainwright in Tuscarawas County, Ohio off of Silver Creek Road and 2nd Street. The AMD discharge from the project area enters the Silver Creel tributary at river mile 0.8 and the Silver Creek tributary enters Mud Run at river mile 1.84. The project site discharge (SC020) is a diffuse deep mine discharge that originates from an unidentified 1960's high wall cut to the west that intercepted a portion of the Starfisted Coal Company's Heater mine (TS-351) that was abandoned in 1922. The coal seam mined was the Middle Kittaning No. 6 seam. This AMD discharge is then combined with the discharge from the Alexander Mine Drain, an ODNR-MRM Public Health and Safety project that was installed in 2013 to stabilize a hillside above several residences in the area. The combined discharge from this site constitutes the largest iron loader in the Silver Creek sub-watershed and the largest AMD impact to the Mud Run main stem in the lower reaches. The Holmes AMD discharge has a current pH of 3.0, an iron load of 96.36 lbs/day and an acid load of 230.00 lbs/day. The discharge negatively impacts the 0.8 mile of Silver Creek and the 1.84 miles that main stem of Mud Run by limiting the biological resources downstream.
The goal of the Holmes AMD project is to build a passive AMD treatment system that will reduce the acid and iron loadings and the amount metal precipitates entering Mud Run and the Tuscarawas River. By treating this discharge, the biological recovery of the main stem of Mud Run can begin. The AMDAT has identified 3 potential AMD projects to restore water quality in Mud Run including the Holmes AMD Project. Given the chemistry of the mine drainage, the treatment system will include the addition of limestone berms to the existing wetland to increase the retention time and allow for the precipitation of iron and out of the drainage the pH will decrease. To add alkalinity to the drainage after metals removal a limestone leach bed downstream of the enhanced wetland area will be constructed. The addition of alkalinity will increase ph of the water after passing through the wetland and before entering Silver Creek. This will greatly improve the water quality in the lower1.84 rover miles of Mud Run and this reduce the impact on the water in the Tuscarawas River.
The engineer’s preliminary estimate for the construction of this project is $275,326.00. DMRM would like to construct this project in 2016 but it has insufficient funds to do so. The financial shortfall is approximately $76,000.00
Total request amount from MWCD PWM Program $76,000.00
Amount granted from MWCD $76,000.00
This project was complete in November 2016.


Mining and Processing Enterprises
At the end of 2017, the pace of coal production in the Novosibirsk Region was 168% faster than in 2016, the rate of oil production 75.8% faster, and the rate of production of other minerals 106.4% faster. The processing enterprises showed excellent growth as compared with 2016: a 102% increase. The largest increase in industrial production was observed in the following economic activities: production of motor vehicles, trailers, and semi-trailers (140.9% against 2016), metallurgical production (121.5%), furniture production (116.1%), etc.
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Adam Tech Conflict Mining / Conflict Metals Policy
Adam Tech uses copper, gold and tin in the production of our products.
By company policy we require all our suppliers to comply with our Supplier Code of Conduct which prohibits the use of conflict mining and metals. We recognize the complex supply chain involved with certain metals and have taken steps to ensure that the virgin metals we purchase do not originate in conflict mines. 'Conflict Mining' and 'Conflict Metals' refers to the illegal control of some mines in the eastern region of the Democratic Republic of Congo in Africa. The electronics industry uses certain types of metals, some of which are potentially refined from minerals obtained from these mines.
The primary minerals and metals that could potentially come from conflict mines are:
- Cassiterite (tin)
- Coltan (niobium and tantalum)
- Wolframite (tungsten)
- Pyrochlore (niobium)
Adam Tech enforces our Conflict Mining/Metals policy and requires immediate corrective action from suppliers who violate of this requirement. Adam Tech and its approved suppliers do not knowingly use any materials from conflict mines and will regularly query suppliers to verify our requirements to enforce compliance.


Hayward Gordon is expanding!!!
Hayward Gordon Group of companies manufacturing plant in Halton Hills is expanding, and the ground has been broken on the 12,000 sq. ft. addition.
The expansion is to accommodate growth in the business, fueled by the demand for Hayward Gordon pumps and mixers. These pumps and mixers assist an assortment of industries in improving their efficiencies and reducing costs. Industries like water and wastewater treatment, mining, oil and gas, pulp and paper, food and beverage, breweries and wineries, chemical, and general industrial.
The plant expansion will enable a more efficient production flow through the facility and increase shipment processing. “Hayward Gordon is working to continuously improve our manufacturing process and meet our customers’ needs,” states Matthew Keogh, CFO.


The Barnstone Mining Solution leverages Barnstone’s extensive mining experience to create a pre-configured version of SAP’s All-in-One software for the mining industry.
“Mid-market mining companies face a double challenge: reducing costs while gaining the flexibility to move rapidly into niche areas in a highly dynamic marketplace,” says Conrad Steyn, business development director at Barnstone. “The Barnstone Mining Solution gives mining clients access to the industry-leading processes and functionality embedded in SAP—optimised for the mining industry, cost effective and at reduced risk. The experience and focus of our implementation team combined with the solution’s predefined project approaches and plans means that the Barnstone Mining Solution can be live within 100 days—another huge benefit.”
The solution offers financial management, project systems, plant maintenance, procure-to-pay and inventory management modules at a fixed price. Once it is stabilised, clients have the option to build on the solution. Industry-specific solutions like Barnstone Mining Solution provide clients with easy access to SAP’s intellectual capital in business processes that really generate business.
The solution has been live at Rand Uranium since August 2010. “The Barnstone Mining Solution was quick to implement and has already helped us to reduce costs while improving performance,” says Mike Gallagher, CIO, Rand Uranium. “And the fact that we could run a comprehensive demo helped make our decision to implement that much easier.”
Barnstone has been a member of the SAP Partner Program since 2008. “Value Added Resellers such as Barnstone are selected for their professional strength, customer successes and SAP applications expertise. SAP is excited about this certification, which follows intensive and vigorous quality checks and processes and they exceeded every stage” says Desmond Nair, Director of Ecosystem and Channel at SAP Africa. “We believe that Barnstone’s certification will benefit the mining industry and provide benefits such as short term return on investment, medium to long term expansion, innovative approaches, easily accessible enhancements and no disruption due to the choice of functionality deployed through enhancement packs.”


Our rental fleet is one of the largest in Finland. We have a wide range of different types of screens and crushers for different materials. Whether it is for short or long term rental needs, we aim to meet the customer’s needs for all screening and crushing needs (rock, various recycled materials, soil and compost). Our fleet consists of the high quality brands we represent. The equipment we rent is new or good as new, as we strive to keep our equipment as new as possible.
We provide the customer with in-service training and familiarity with the equipment, ensuring easy and trouble-free deployment. The aim is to optimize production capacity and reliability with a good level of equipment, expert technical support and spare parts service.
Kivisampo has long experience in screening and crushing equipment, and our experts will help you choose the rental equipment that best fits your needs. Please contact us for more details.


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Here's a look at what you need to know about mine disasters in the U.S.
This is a list of some of the more notable mine disasters, not all-inclusive.
Timeline: December 6, 1907 - Worst coal mine disaster in U.S. history: 362 miners are killed in an explosion at the Monongah Nos. 6 and 8 Coal Mines in Monongah, West Virginia.
November 13, 1909 - 259 miners are killed in a fire at the Cherry Mine in Cherry, Illinois.
October 22, 1913 - An explosion kills 263 at the Stag Canon No. 2 Coal Mine in Dawson, New Mexico.
June 8, 1917 - 163 miners are killed in a fire at the Granite Mountain Shaft Mine in Butte, Montana.
January 10, 1940 - 91 miners are killed by an explosion at Pond Creek No. 1 in Bartley, West Virginia.
March 16, 1940 - An explosion at the Willow Grove No. 10 mine in St. Clairsville, Ohio kills 72 miners.
March 25, 1947 - 111 miners are killed in an explosion at the Centralia No. 5 mine in Centralia, Illinois.
December 21, 1951 - An explosion at Orient No. 2 mine in West Frankfort, Illinois kills 119 miners.
November 20, 1968 - 78 miners are killed by an explosion at Consol No. 9 miner in Farmington, West Virginia.
December 30, 1970 - 38 miners are killed in an explosion at Nos. 15 and 16 Mines in Hyden, Kentucky.
May 2, 1972 - 91 miners are killed in a fire at the Sunshine Mine in Kellogg, Idaho.
March 15, 1981 - 15 miners are killed by an explosion at Dutch Creek No. 1, Mid-Continent Resources, Inc. in Redstone, Colorado.
December 19, 1984 - 27 miners are killed in a fire at the Wilberg Mine in Emery County, Utah.
September 23, 2001 - 13 miners are killed by an explosion at the No. 5 Mine, Jim Walter Resources, Inc. in Brookwood, Alabama.
July 24, 2002 - Nine coal miners from Quecreek Mining Inc. in Somerset County, Pennsylvania, are trapped in a four-foot-high chamber 240 feet below the surface after breaching a wall separating their mine from an older, flooded shaft. All survive and are rescued on July 28.
January 2, 2006 - An explosion occurs at around 6:30 a.m. at the Sago Mine in Tallmansville, West Virginia, trapping 13 miners. Twelve of the men had died from carbon monoxide poisoning by the time rescuers reach them around midnight January 3 - 4. Randal McCloy, 27, is the only survivor.
May 20, 2006 - Five miners are killed in an explosion at the Darby Mine No. 1 in Harlan County, Kentucky. One miner, Paul Ledford, survives.
August 6, 2007 - Six miners are trapped at the Crandall Canyon Mine in Huntington, Utah when areas of the mine collapse. - August 16, 2007 - Three rescue workers are killed and 6 are injured when a part of the mine collapses on them. - August 31, 2007 - The search for the six trapped miners is officially called off and declared too dangerous for continued rescue efforts. - May 8, 2008 - Rep. George Miller releases a report from the House Education and Labor Committee about the panel's investigation of the Crandall Canyon Mine disaster. He recommends that a criminal investigation be conducted.
April 5, 2010 - 29 miners are killed in an explosion at the Upper Big Branch mine in Naoma, West Virginia. - April 29, 2011 - Massey Energy agrees to permanently seal the Upper Big Branch mine. - May 19, 2011 - According to the Governor's Independent Investigation Panel's report, the explosion was preventable and due to safety system failures. - December 6, 2011 - The Justice Department announces a deal where the new owners of the Upper Big Branch coal mine will pay a $209 million settlement, including $1.5 million to the families of each of the 29 men who died. - January 10, 2012 - The owner of the West Virginia mine settles the wrongful death lawsuits with families of all 29 victims of the Upper Big Branch disaster. CNN confirmed that the settlement was reached in mediation for 7 of the cases on January 8, 2012 and 22 of the cases on January 10, 2012. The settlement still needs to be approved by the courts. - February 22, 2012 - Gary May, the Upper Big Branch mine's superintendent at the time of the explosion, is charged with conspiring to impede the Mine Safety and Health Administration's enforcement efforts at the mine between February 2008 and April 5, 2010. He pleads guilty in March 2012. - June 20, 2012 - Alpha Natural Resources places the final concrete barrier in place to seal the Upper Big Branch mine permanently.


Mobile Crushing Plant by Mewar Hi-Tech Engineering Ltd. is getting huge acceptance and increased demand in the country. The use of this plant is rising, given to the feature of mobility. The compact crushing plant is mounted on the trailer of a truck. This plant can be utilized for small to medium capacity mining activities. Aggregates can be efficiently crushed into small particles by this plant. This wheel mounted plant can be moved from one site to another when the job of crushing material is over. This moving of the crushing plant is no hassle, in terms of logistical. The mobile crushing plant can operate close to the site. There is no need to commission or dismantle this plant. Using this plant will only benefit the clients, as they could save the cost of conveyor belt and dump trucks.


Since the launch of the Towards Sustainable Mining initiative (TSM) in 2004, MAC has been leading the way in responsible mineral production. Today, as communities, investors and customers continue to raise the bar of expectation, MAC has been focused on working with our members to ensure we meet those expectations.
This presentation will focus on what TSM is and what it has accomplished over the last decade and a half, from world-leading tailings standards to innovative approaches to working with indigenous communities to leading the way in cross-recognition with other leading sustainability standards to reduce the burden on those that have to apply these standards.
"The Toward Sustainable Mining Initiative", December 1
@ 1 ET Host: Ben Chalmers, Senior V-P,
Mining Association of Canada
Canadian Mining Builds International Standard
Members of the CFPA will take away a better understanding of how Canadian mining is building an international standard capable of ensuring the metals and minerals used in their equipment and products are mined to the highest standards. Members will also gain insights into how they can tailor their service offerings to assist their mining customers in meeting the demanding ESG requirements of TSM.
Ben will also introduce members to the Mining Suppliers Trade Association.


Nigeria’s first gold refinery being built by Kian Smith Trade & Co Limited is billed to be completed by the end of June next year.
There was already a significant monthly supply of gold from Zamfara, Kebbi, Kwara, Niger, Kaduna, Ibadan, Ile-Ife, and Ilesha and about 100kg per month from other parts of Africa,” said the Vice Chairman, Kian Smith, Nere Teriba.
The firm was finalising supply agreements and terms from suppliers in Kano, and supply from Kogi State.
According to the Punch, the refinery would start with a production capacity of three tonnes per month of 99.99 per cent gold and one ton per month production of 99.99 per cent silver.
The Minister of State for Mines and Steel Development, Abubakar Bwari, was at the ground-breaking ceremony.
He said: “The present administration is determined to develop the mining sector to act as a catalyst for sustainable economic growth of the country.
“Part of our marching orders in the mines and steal development ministry is that we are expected to develop the sector to increase its contribution to the nation’s Gross Domestic Product, improve its capacity to create jobs and engender sustainable mining.”
He noted that it was in keeping with his ministry’s mandate that a road map was developed for the growth and development of the mining sector.
“During the focus labs of the Economic Recovery and Growth Plan of this administration, we discovered that a well-organised gold value chain can trigger an economic revolution as it did in India, South Africa, Switzerland and others,” Bwari said.
He added that the ministry had continued to work in this light to develop a gold value chain for the country.
“We will be supplying the Central Bank of Nigeria, the jewellery and the electronics industry.”
According to Vice Chairman, Kian Smith, Nere Teriba, the refinery, when completed, will provide more than 500,000 jobs in two years as it continues to support its suppliers in their bid to become registered business entities in the mining sector.
“There are at present at least one million unregistered business participants in the Nigerian market (considering gold miners, sponsors, dealers, processors, aggregators and gold-workers).
The formalisation, organisation and development we bring to the value chain will provide quick wins to the Nigerian economy,” she added.