Hardwick, W.R.
Open-Pit Copper Mining Methods, Morenci Branch, Phelps Dodge Corp., Greenlee County, Arizona - SEGEMARU.S.A. 1959
Departamento Del Interior De Los Estados Unidos, Circular 7911
Mineral/es: Cobre
Open-Pit Copper Mining Methods, Morenci Branch, Phelps Dodge Corp., Greenlee County, Arizona - SEGEMARU.S.A. 1959
Departamento Del Interior De Los Estados Unidos, Circular 7911
Mineral/es: Cobre