Excerpt from Placer Gold Deposits of Arizona Eighty-seven placer districts in Arizona are estimated to have produced a mini mum Oi ounces of placer gold from 17
Excerpt from Placer Gold Deposits of Nevada Following the discovery of placers at Gold Canyon, placer discoveries in Nevada were broadly in three periods: the 1
Arizona Gold Placers and Placering was published by the Arizona Bureau of Mines in conjunction with University of Arizona as Bulletin 118 in 1922 and eventually