Economic evaluation of borehole and conventional mining systems in phosphate deposits /

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書目詳細資料
主要作者: Hrabik, Joseph A.
其他作者: Godesky, Douglas J.
格式: 圖書
語言:英语
出版: [Washington] : U.S. Dept. of the Interior, Bureau of Mines, 1983.
叢編:Information circular (United States. Bureau of Mines) ; 8929
主題:
Phosphate mines and mining.
Borehole mining.
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