Mitke, C.A., 1920, Mining methods of United Verde Extension Mining Co.: American Institute of Mining and Metallurgical Engineers, Transactions, v. 61, p. 188-200.
Mitke, C.A.
American Institute of Mining and Metallurgical Engineers, Transactions, v. 61, p. 188-200.
Mineral District, History, Production, Massive Sulfide, Mining Engineering,