Romslo, T.M., and Ravitz, S.F., 1947, Arizona manganese-silver ores: U.S. Bureau of Mines Report of Investigations R.I. 4097, 13 p.
Romslo, T.M., and Ravitz, S.F.
U.S. Bureau of Mines Report of Investigations R.I. 4097, 13 p.
Mineral District, Silver, Manganese, History, Production, Mineralization, Ore, Leach Extraction,