Search

Search U.S. government technical reports digitized or harvested by TRAIL.

Keyword Search

Enter your search term(s):
[advanced search]

3 results returned

Search results

• Mining methods and costs at the Ground Hog Unit, Asarco Mining Co., Vanadium, New Mexico
• Mining and engineering methods and costs of the Hanover Bessemer Iron & Copper Co., Fierro, N. Mexico
• Mining practice at the Chino mines, Nevada Consolidated Copper Co., Santa Rita, N. Mex.