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Underground chute gates in metal mines
Gold Mining and Milling in the United States and Canada: Current Practices and Costs
Waste filling of stopes
Annual report of the Mining Division, fiscal year 1939
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Published Year
1930-1939 (4)
Subject
Mineral industries--United States--Statistics (1)
Mines and mineral resources--Equipment and supplies (1)
Stoping (Mining) (1)
Author
Jackson, Charles F. (4) *
Knaebel, John B. (1)