Search U.S. government technical reports digitized or harvested by TRAIL.
Safety organizations in Arizona copper mines
Concentrator methods and costs at the Hayden Plant of the Nevada Consolidated Copper Co., Arizona
Mining methods and costs at the New Cornelia Branch, Phelps Dodge Corporation, Ajo, Ariz.
Design, equipment, and construction costs of Davis-Dunkirk concentrator, Prescott, Ariz.
Milling and smelting operations of the Magma Copper Co., Superior, Ariz.
Safety practices in churn drilling at Morenci Branch, Phelps Dodge Corp, Morenci, Ariz.
Use of visual aids in the Morenci Branch safety program, Phelps Dodge Corp., Morenci, Ariz.
Analysis of the geometry of fractures in San Manuel Copper Mine, Arizona