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gold mining meacutetodos de extraccioacuten

gold mining meacutetodos de extraccioacuten

Othergoldmines use undergroundmining, where the ore is extracted through tunnels or shafts. South Africa has the world's deepest hard rockgold mineup to 3,900 metres (12,800 ft) underground. At such depths, the heat is unbearable for humans, and air conditioning is required for the safety of the workers. The first suchmineto receive air ...

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