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The mining industry of Liberia has witnessed a revival after the civil war which ended in 2003. Gold, diamonds, and iron ore form the core minerals of the mining sector with a new Mineral Development Policy and Mining Code being put in place to attract foreign investments. In 2013, the mineral sector accounted for 11% of GDP in the country and the World Bank has projected a further increase in ...

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The evaluation of environmental impact of artisanal gold mining was carried out in Luku, Minna, North Central Nigeria, to evaluate environmental hazards associated with artisanal gold mining through field work and Laboratory analyses. During the field work, observations of the whole mining site were made so as to evaluate the physical impact of mining and representative soil samples were ...

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Abstract The evaluationof environmental impact of artisanal gold mining was carried out in Luku, Minna, North Central Nigeria, to evaluate environmental hazards associated with artisanal gold mining through field work and Laboratory analyses. During the field work, observations of the whole mining site were made so as to evaluate the

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The mining industry of Liberia has witnessed a revival after the civil war which ended in 2003. Gold, diamonds, and iron ore form the core minerals of the mining sector with a new Mineral Development Policy and Mining Code being put in place to attract foreign investments.

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The Mining industry of the Democratic Republic of the Congo is a significant factor in the world's production of cobalt, copper, diamond, tantalum, tin, and gold. It is the Democratic Republic of the Congo's largest source of export income. In 2009, the Democratic Republic of the Congo (DRC) had an estimated $24 trillion in untapped mineral deposits, including the world's largest reserves of ...

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As these effects often relate to contamination from tailings and acid mine drainage produced during and after mining operations, the EIA of mining projects should encompass the entire life cycle of the mine, should incorporate the assessment of negative impacts and societal benefits also, and must incorporate the liability and the cost – and ...

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installation of new mining plants, construction of railways, roads, and bridges. As a result, the Government of Liberia has enacted (2003–2006) a legal framework providing for the sustainable use and conservation of natural resources. However, the adoption of the environmental management tools such as Environmental Impact Assessment (EIA),

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Aug 27, 2015· Re: Public Display Exercise on the Environmental Impact Assessment (EIA) for the Proposed Tin and Columbite Mining Project at Pingel Village, Toro Local Government Area, Bauchi State by Henan Golden Stone Mining and Processing Company Nigeria Limited. June 22, 2015

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Columbite | mineral | Britannica

Columbite, hard, black (often iridescent), heavy oxide mineral of iron, manganese, and niobium, (Fe, Mn)Nb2O6. Tantalum atoms replace niobium atoms in the crystal structure to form the mineral tantalite, which is similar but much more dense. These minerals are the most abundant and widespread of

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