Author: Richard H. OittoPublisher:
ISBN:
Category : Coal mines and mining
Languages : en
Pages : 44
Book Description
Three Potential Longwall Mining Methods for Thick Coal Seams in the Western United States PDF Download
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Author: Richard H. OittoPublisher:
ISBN:
Category : Coal mines and mining
Languages : en
Pages : 44
Book Description
Author: Richard H. Oitto
Author: Donna L. Boreck
Author: T. D. Hackett
Author: 
Author: United States. Bureau of Mines
Author: United States. Bureau of Mines
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Author: 
Author: 
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