Search
Search U.S. government technical reports digitized or harvested by TRAIL.
Keyword Search
10066 results returnedSearch results
- Onyx marble and travertine
- Developments in coal research and technology in 1937 and 1938
- Friability, grindability, chemical analyses, and high- and low-temperature carbonization assays of Alabama coals
- Splint coals of the Appalachian Region:their occurrence, petrography, and comparison of chemical and physical properties with associated bright coals
- Carbonizing properties and petrographic composition of Pocahontas no. 3-bed coal from Buckeye no. 3 mine, Wyoming County, W. Va., and of Pocahontas no. 4-bed coal from no. 4 mine, Raleigh County, W. Va.
- Carbonizing properties and petrographic composition of Lower Banner-bed coal from Keen Mountain mine, Buchanan County, Va. :and the effect of blending this coal with Pittsburgh-bed (Warden Mine) coal
- Bentonite:its properties, mining, preparation, and utilization
- Production of explosives in the United States during the calendar year 1939
- Coke-oven accidents in the United Statesduring the calendar year 1939
- Characteristics of fuel pitches and their explosibility in pulverized form
- Coke-oven accidents in the United States during the calendar year 1938
- Use of respiratory protective devices under abnormal air pressure
- Survey of crude oils of the producing fields of Arkansas
- An experimental study of the ignition of firedamp-air mixtures by explosives
- Annual report of the Explosives Division, fiscal year 1939
- Determination of total water-soluble chlorides in petroleum
- Use of wetting agents for allaying coal dust in mines
- Annual report of the Mining Division, fiscal year 1940
- Progress reports - metallurgical division.
- Gas explosions in buildings :their cause and prevention
- Annual report of research and technologic work on coal, fiscal year 1940
- Cutting and polishing stones
- Natural-gasoline plants in the United States January 1, 1940
- Possibilities of manganese production at Leadville, Colo.
- Petroleum refineries, including cracking plants, in the United States, January 1, 1940
- Novel device for collecting air samples in inaccessible places
- Fatalities caused by electric contacts in Alabama coal mines, 1925-39
- More jobs for minerals
- Cars for transporting explosives
- The new metallurgical experiment station for the Bureau of Mines, United States Department of the Interior, at Salt Lake City, Utah
- The Potash situation
- Portable cabinets for materials used in mineral determinations
- Mining and milling methods and costs at Knob Hill Mine, Republic, Wash.
- Minerals used in welding
- Mining and milling methods and costs at the Ash Peak mine of the Veta Mines, Inc., Duncan, Ariz.
- Some information on reduction of quarry accidents
- Methods of sampling and analyzing coal-mine dusts for incombustible content
- Operations at the Haile Gold Mine, Kershaw, S.C.
- Some information for miners about coal-mine ventilation
- Petrographic methods and their application to the examination of nonmetallic materials
- Testing respiratory protective equipment for approval
- Work of the Bureau of Mines safety cars in the Pennsylvania anthracite region from 1934 to 1939
- Effect of hydrogen-ion concentration on the growth of hydrgen and carbon monoxide bacteria
- Production, employment, and output per man in gypsum mining
- Kimberly method of block-caving using slusher drifts
- Coal-mine explosions and coal- and metal-mines fires in the United States during the fiscal year ended June 30, 1940
- Grinding pebbles and tube-mill liners
- Are new hazards being introduced in coal mines faster than existing hazards are eliminated
- Cooling mine air during summer months to prevent roof falls
- The cement industry of Latin America
