Plummer, W.L., 1916, Successful dry placer operations at Plomosa, Arizona: Mining and Engineering World (Chicago), v. 45, no. 1, p. 1-3. Authors Plummer, W.L. Publication Date 1916 Citation Mining and Engineering World (Chicago), v. 45, no. 1, p. 1-3. State AZ Province BR County LP Placenames La Posa Plain Dome Rock Mts. Keywords Mineral District Gold Placer Mining Engineering More Keywords Mineral District, Gold, Placer, Mining Engineering, AzGeoBib RefNum 8007
