Milling methods and costs at the Montana mine concentrator of the Eagle-Picher Lead Co., Ruby, Ariz.
Andrus, D.E., 1931, Milling methods and costs at the Montana mine concentrator of the Eagle-Picher Lead Co., Ruby, Ariz.: U.S. Bureau of Mines Information Circular I.C. 6497, 15 p.
Authors
Andrus, D.E.
Publication Date
1931
Citation
U.S. Bureau of Mines Information Circular I.C. 6497, 15 p.
