U.S. Bureau of Mines, 1945, Van Dyke copper mine, Gila County, Ariz.: U.S. Bureau of Mines War Minerals Report 378, 20 p.
U.S. Bureau of Mines
U.S. Bureau of Mines War Minerals Report 378, 20 p.
Porphyry Copper, History, Production, In situ, Mining Engineering,