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Mining Industry Coal And Nickel Bouxit The Quality Analysis Problem

Mining Industry Coal And Nickel Bouxit The Quality Analysis Problem

Mar 01 2010 We must develop clean mining technolo- gies. European countries used coal as their main en- ergy source for a long time but now coal mining has become a sunset industry and many coal mines are abandoned. They also faced environmental problems from coal mining and have had more experience in how to resolve the problems.
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