U.S. Bureau of Mines, 1944, Santo Nino deposit: U.S. Bureau of Mines Mineral Property File 04-21.108, 9 p.
U.S. Bureau of Mines
U.S. Bureau of Mines Mineral Property File 04-21.108, 9 p.
Mineral District, Porphyry Copper, Silver, Molybdenum, Mineralization,