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Underground coal mining | Extreme coal mining process
9:00
YouTubeinfo KU
Underground coal mining | Extreme coal mining process
Coal is a natural resource formed from organic deposits from dead plants and buried in the ground for millions of years. Coal is one of the most abundant types of fossil fuels in the world. Underground coal mining is a method of extracting coal that is carried out below the ground surface 1. underground coal mining 2. loading coal barges 3 ...
已浏览 32.6万 次2023年8月16日
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