Search U.S. government technical reports digitized or harvested by TRAIL.
The significance of the Bureau of Mines approval of gas masks
Petroleum refineries in the United States, January 1, 1932
Milling methods and costs at the concentrator of the Miami Copper Co., Miami, Ariz.
Shaft sinking at the Morton Salt Co. mine at Grand Saline, Texas
Milling methods and costs at a Flat River (Mo.) mill
Milling methods at the Balmat Mill of the St. Joseph Lead Co., Balmat, St. Lawrence County, N.Y.
Economic factors influencing the domestic demand for gasoline.
Mining methods and costs at Fresnillo, Zacatecas, Mexico
Bonuses to encourage safe work and for work safely done
Safety progress in anthracite and bituminous coal fields
Ten years of fatal accidents and two years of accident costs in Indiana coal mining
Method and cost of quarrying limestone at the plant of the Calaveras Cement Co., San Andreas, Calif.
Growth and development of nonmetallic mineral industries
Some notes on methods and costs of equipping and developing prospects
Saving life by barricading in mines and tunnels at times of disaster
Mining laws of Chosen (or Korea)
Diamond drilling at the United Verde mine
Portable electric lamps for animal haulage in Alabama
Flotation processes for cleaning fine coal
Mining laws of Surinam (Dutch Guiana)
Timber withdrawing and devices used for this purpose in some coal mines
Factors and conditions that aid in alinement of pillar extraction lines in coal mining
Milling methods at the lead-zinc concentrator of the International Smelting Co., Tooele, Utah
Explosions in Utah coal mines, 1900-1932
Essentials for a preliminary report on a small lode-gold mine or prospect, with notes on sampling
Use of electric power in Castle Gate No. 2 mine, Utah Fuel Co.
Mining methods and costs at the McIntyre Porcupine Mines, Ltd., Schumacher, Ontario
Petroleum and natural-gas studies of the United States Bureau of Mines