Search U.S. government technical reports digitized or harvested by TRAIL.
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
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
Protective clothing in the mining industry
The Experimental mine of the United States Bureau of Mines
Mining laws of the Irish Free State
Petroleum refineries, including cracking plants, in the United States, January 1, 1933
Economic aspects of gold and silver
Blasting practices as they affect the roof of coal mines in Ohio, Pennsylvania, and West Virginia
Accident prevention at the New Black Diamond Coal Mine, Washington
Design, equipment, and construction costs of Davis-Dunkirk concentrator, Prescott, Ariz.
Explosives accidents in California metal mines
Evolution of methane detecting devices for coal mines
Production of explosives in the United States :during the calendar year 1932
Accidents at metallurgical works in the United States :during the calendar year 1931
Limits of inflammability of natural gases containing high percentages of carbon dioxide and nitrogen
Active list of permissible explosives and blasting devices approved prior to June 30, 1933.
The National safety competition of 1932
Places of occurrence of injury from falls of roof
Volatilization of impuities from zinc concentrates
Mining methods and costs at Granada Gold Mines, Ltd., Rouyn, Quebec
Mining laws of New Caledonia and French Oceania
Mine explosions and fires in the United States during the fiscal year which ended June 20, 1932