|Traded as||TYO: 5707|
|Founded||February 27, 1937|
Number of employees
|1,089 (consolidated, as of March 31, 2017)|
Toho Zinc Co., Ltd. (東邦亜鉛株式会社, Tōhō Aen Kabushiki-gaisha) is a Japanese manufacturer of zinc related products. Established in 1937, it smelts nonferrous metals such as lead and zinc and produces electronic components. There are seven branches in Japan and two branches in China, in Hong Kong and Shanghai. The company was responsible for cadmium poisoning on Tsushima Island in the late twentieth century.
The company is Japan’s third-biggest producer of zinc.
Toho Zinc has four manufacturing sites in Japan:
Asarco LLC is a mining, smelting, and refining company based in Tucson, Arizona, which mines and processes primarily copper. The company is a subsidiary of Grupo México since 1999.
Falconbridge Limited was a Toronto, Ontario-based natural resources company with operations in 18 countries, involved in the exploration, mining, processing, and marketing of metal and mineral products, including nickel, copper, cobalt, and platinum. It was listed on the TSX and NYSE (FAL), and had revenue of US$6.9 billion in 2005. In August 2006, it was absorbed by Swiss-based mining company Xstrata, which had formerly been a major shareholder.
Vedanta Limited is a mining company based in India, with its main operations in iron ore, gold and aluminium mines in Goa, Karnataka, Rajasthan and Odisha.
Teck Resources Limited, known as Teck Cominco until late 2008, is a diversified natural resources company headquartered in Vancouver, British Columbia, that is engaged in mining and mineral development, including steelmaking coal, copper, zinc and energy. Secondary products include lead, silver, gold, molybdenum, germanium, indium and cadmium. Teck Resources was formed from the amalgamation of Teck and Cominco in 2001. In the 2020 Forbes Global 2000, Teck Resources was ranked as the 1616th -largest public company in the world.
Boliden AB is a Swedish mining and smelting company focusing on production of copper, zinc, lead, gold and silver. Following a series of acquisitions during the 1980s and 1990s the company acquired mining and smelting assets of the Finnish mining and smelting company Outokumpu in 2003. Outokumpu acquired the subsidiary Boliden Contech and Boliden's copper and zinc divisions. As a consequence of the deal, Outokumpu ended up controlling 49 percent of the Boliden shares.
The Doe Run Resources Corporation, known by the trade name The Doe Run Company, is a privately held natural resources company and global producer of lead, copper, and zinc concentrates. It owns four mills, six mines and a lead battery recycling plant, all in southeast Missouri, United States, and a subsidiary Fabricated Products Inc. with locations in Arizona and Washington. It also owns two former primary lead smelter sites in the U.S. that are currently being remediated. It is wholly owned by The Renco Group, Inc
Zinifex was an Australian company that operated lead and zinc mines, refineries and a lead smelter. It was established in April 2004, when the assets of Pasminco were spun-off. In 2008 it merged with Oxiana to form OZ Minerals.
Mount Isa Mines Limited ("MIM") operates the Mount Isa copper, lead, zinc and silver mines near Mount Isa, Queensland, Australia as part of the Glencore group of companies. For a brief period in 1980, MIM was Australia's largest company. It has pioneered several significant mining industry innovations, including the Isa Process copper refining technology, the Isasmelt smelting technology, and the IsaMill fine grinding technology, and it also commercialized the Jameson Cell column flotation technology.
The Idemitsu Kosan Company, Ltd., trading as Idemitsu Showa Shell, is a Japanese petroleum company. It owns and operates oil platforms, refineries and produces and sells petroleum, oils and petrochemical products.
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Hindustan Zinc Limited (HZL) is an Indian integrated mining and resources producer of zinc, lead, silver and cadmium. It is a subsidiary of Vedanta Limited. HZL is the world's second largest zinc producer. Its FY2018 revenues stood at ₹22,084 crore. They are one of the world's largest integrated producers of zinc and are among leading global lead and silver producers.
Dowa Holdings is a Japanese nonferrous metals manufacturer. The company is a component of the Nikkei 225 stock index.
Mitsubishi Materials Corporation, or MMC, is a Japanese company. It is a manufacturer of cement products, copper and aluminum products, cemented carbide tools, and electronic materials. It is one of the core companies of Mitsubishi Group.
Sumitomo Chemical Co., Ltd. is a major Japanese chemical company. The company is listed on the first section of the Tokyo Stock Exchange and is a constituent of the on the Nikkei 225 stock index. It's a member of the Sumitomo group and was founded in 1913 as a fertilizer manufacturing plant.
Centres of mining operations include Konkola and Kitwe.
Plants for the production of lead are generally referred to as lead smelters. Primary lead production begins with sintering. Concentrated lead ore is fed into a sintering machine with iron, silica, limestone fluxes, coke, soda ash, pyrite, zinc, caustics or pollution control particulates. Smelting uses suitable reducing substances that will combine with those oxidizing elements to free the metal. Reduction is the final, high-temperature step in smelting. It is here that the oxide becomes the elemental metal. A reducing environment pulls the final oxygen atoms from the raw metal.
MIM Holdings Limited was an Australian mining company created in 1970 as the parent company of Mount Isa Mines Limited, which operates the Mount Isa mines in north-west Queensland. Based in Brisbane, the capital city of the Australian state of Queensland, MIM Holdings owned and/or operated coal, gold, and base metal mines in Australia and Argentina. It also operated lead and copper smelters in Mount Isa, a copper refinery in Townsville (Queensland), a lead refinery at Northfleet (England), zinc smelters using the Imperial Smelting Process at the National Smelting Company located within Avonmouth Docks (England) and Duisburg (Germany), and a precious metals refinery in Sydney.
The International Copper Study Group (ICSG) is an intergovernmental organisation of copper producing and consuming states that functions as the international commodity board for copper. Its main purpose is to increase copper market transparency and promote international discussions and cooperation on issues related to copper. As of 2019, ICSG Share in the World Copper Market represents 82 percent of world copper mine production, 87 percent of world copper refined production and 83 percent of the world copper refined usage.
The Bottom-blown Oxygen Converter or BBOC is a smelting furnace developed by the staff at Britannia Refined Metals Limited (“BRM”), a British subsidiary of MIM Holdings Limited. The furnace is currently marketed by Glencore Technology. It is a sealed, flat-bottomed furnace mounted on a tilting frame that is used in the recovery of precious metals. A key feature is the use of a shrouded lance to inject oxygen through the bottom of the furnace, directly into the precious metals contained in the furnace, to oxidize base metals or other impurities as part of their removal as slag.
South32 is a mining and metals company headquartered in Perth, Western Australia. It was spun out of BHP Billiton on 25 May 2015. The company is listed on the Australian Securities Exchange with secondary listings on the Johannesburg and London Stock Exchanges.
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