Search U.S. government technical reports digitized or harvested by TRAIL.
Electrical blasting at Miami Copper Co., Miami, Ariz.
Safety practices in churn drilling at Morenci Branch, Phelps Dodge Corp, Morenci, Ariz.
Safety in milling :Magma Copper Co., Superior, Ariz.
Safety in hoisting at the United Verde Mine, Phelps Dodge Corp., Jerome, Ariz.
Use of visual aids in the Morenci Branch safety program, Phelps Dodge Corp., Morenci, Ariz.
Two-way radio communication at Santa Rita Open Pit, Kennecott Copper Corp., Santa Rita, N. Mex.
Use of prestressed precast shaft supports, Banner Mine, Lordsburg, N. Mex.
Chemical solidification of soil in tunneling at a Minnesota iron-ore mine