Billingsley, G.H., 1976, Prospectors' proving ground, in History of mining in Grand Canyon region: Journal of Arizona History, v. 17, no. 1, p. 69-88. Authors Billingsley, G.H. Publication Date 1976 Citation Journal of Arizona History, v. 17, no. 1, p. 69-88. State AZ UT Province CP TR County MO CN Placenames Marble Canyon Kaibab Plateau Hack Canyon Coconino Plateau Grand Wash Cliffs Keywords Mining Uranium Vanadium Asbestos Copper Silver Gold Guano More Keywords Mining, Uranium, Vanadium, Asbestos, Copper, Silver, Gold, Guano, AzGeoBib RefNum 941
