1. Environmental problems in the mining and soil no abundance. Dirty rough areas have many potholes and was not fully use
2.Problems in the use of certain types of minerals, such as iron ore is used very widely and most coal, petroleum, tin, etc. 3
.Problems in the use of mineral is not worth, including the mineral waste left. Can also be brought back into use, such as iron, the ore used over Such as coal, oil, petroleum, natural gas, so we need to use efficiently and economically.
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