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More than 30 million cubic meters of water and tailings from iron ore mining were released into the environment. [6] Iron ore tailings dam breaks cause serious environmental damage and fatality in humans. Tailings impoundments also have the potential to seep. Seepage can be prevented or at least minimized by creating an impermeable layer. [13]
The Córrego do Feijão tailings dam, built in 1976 by Ferteco Mineração and acquired by the iron ore mining corporation Vale S.A. in 2001, was classified as a small structure with low risk of high potential damage, according to the registry of the National Mining Agency. In a statement, the State Department of Environment and Sustainable ...
The Mariana dam disaster, also known as the Bento Rodrigues or Samarco dam disaster, occurred on 5 November 2015, when the Fundão tailings dam at the Germano iron ore mine of the Samarco Mariana Mining Complex near Mariana, Minas Gerais, Brazil, suffered a catastrophic failure, resulting in flooding that devastated the downstream villages of Bento Rodrigues and Paracatu de Baixo (40 km (25 mi ...
In March 2011, FMG lodged an application with the Environmental Protection Authority of Western Australia for approval of the Solomon iron ore project, consisting of the Kings Valley and Firetail mine, and 127 km (79 mi) of new railway line to connect the mines with the existing Fortescue railway. Mine life, at the time, was predicted to be 20 ...
In 2015, the iron ore tailings dam failure at the Germano mine complex in Minas Gerais, Brazil, was the country's biggest environmental disaster. The dam breach caused the death of 19 people due to flooding of tailings slime downstream and affected some 400 km of the Doce river system with toxic effluence and out into the Atlantic Ocean.
Mining operations remain rigorous and intrusive, often resulting in significant environmental impacts on local ecosystems and broader implications for planetary environmental health. [3] To accommodate mines and associated infrastructure, land is cleared extensively, consuming significant energy and water resources, emitting air pollutants, and ...
Of the iron ore exported, 38.5% of the volume was iron ore pellets with a value of $2.3 billion, and 61.5% was iron ore concentrates with a value of $2.3 billion. [40] 46% of Canada's iron ore comes from the Iron Ore Company of Canada mine, in Labrador City, Newfoundland, with secondary sources including the Mary River Mine in Nunavut. [40] [41]
The most commonly mined ore of copper, chalcopyrite, is itself a copper-iron-sulfide and occurs with a range of other sulfides. Thus, copper mines are often major culprits of acid mine drainage. At some mines, acidic drainage is detected within 2–5 years after mining begins, whereas at other mines, it is not detected for several decades.