Search U.S. government technical reports digitized or harvested by TRAIL.
Umber, sienna, and other brown earth pigments
A mechanically driven level rock tunnel
Abstracts of recent articles on mine support
Growth and development of nonmetallic mineral industries
The present status of the mineral industry
How can the Bureau of Mines best serve mining? (the Bureau and the South)
Use of airplanes in mining and petroleum operations (abstract)
Leasing system as applied to metal mining
Mining methods and costs at the Eureka Standard mine
Minor mineral fertilizer materials
Suggested methods for the reduction of mine accidents from the viewpoint of the safety engineer
Shifts in sources of chromite supply
The new Bureau of Mines Southern Experiment Station at the University of Alabama, Tuscaloosa, Ala.
Electric signaling system, Ross shaft, Homestake Mining Co.
The Bureau of Mines and mineral utilization
Strategic minerals investigations :procedure followed by the Bureau of Mines