Search
Search U.S. government technical reports digitized or harvested by TRAIL.
Keyword Search
10066 results returnedSearch results
- Sulphur :general information
- Marble
- Selenium and tellurium
- Monazite, thorium, and cerium
- Underground mining practice and costs at a Mesabi Range (Minnesota) mine using the top slicing system
- Mineral wool
- Production of explosives in the United States :during the calendar year 1928
- Results of air repressuring and engineering study of Williams Pool Putnam-Moran District Callahan County, Texas
- The Wire Saw in slate quarrying
- Acceleration of extraction of soluble copper from leached ores
- Analyses of Maryland coals
- Coke-oven accidents in the United States :during the calendar year 1928
- How leakage of current from an electric shot-firing circuit causes misfires
- Accidents at metallurgical works in the United States :during the calendar year 1928
- The form of copper in converter slag
- Official changes in the active list of permissible explosives and blasting devices for February, 1930
- Cracking natural gas in water-gas generators with recovery of carbon black
- Effect of sealing on acidity of mine drainage
- Re-treatment of mother lode carbonaceous slime tails
- Sulphur dioxide in the air at the Pittsburgh experiment station of the U.S. Bureau of Mines
- Laboratory and field tests of a permissible indicating methane detector
- A study of the Marshall-Bird test for determining the agglutinating value of coal
- Washability studies of the Clark Seam at Marvel, Alabama
- Grinding and classification.
- Nine years of smoke-abatement work at Salt Lake City
- Flotation reagents, 1928
- Use of ethyl mercaptan to detect leaks in natural-gas distribution systems
- Cooperative research between the United States Bureau of Mines and the Safety in Mines Research Board
- Toxicity of dichloro-difluoro methane :a new refrigerant
- Official changes in the active list of permissible explosives and blasting devices for March, 1930
- Roasting of chromite ores to produce chromates :a study of effects of various reagents and impurities on oxidation reactions
- The power consumed by rotating disks and other shaped objects in fluid mediums
- The sand and gravel safety contest of 1929
- A new flame safety-lamp testing and demonstration apparatus
- Official changes in the active list of permissible explosives and blasting devices for June, 1930
- Dissolution of various manganese minerals
- Test of ampoules filled with palladium salt solution for detecting carbon monoxide
- Tests of the strength of concrete stoppings designed to resist the pressure of explosions in coal mines
- Concentration tests on the mangniferous iron ores of the Cuyuna district, Minnesota
- Hauling coal safely with permissible storage-battery locomotives
- The lower limits of inflammability of natural gas-air mixtures in a large gallery
- Influence of washing coal on coke properties and on gas and by- product yields
- Increased recoveries of phosphate in the land-pebble district of Florida
- Survey of fuel consumption at refineries in 1929
- Review of fatalities in the California petroleum industry during the calender year 1929
- Leaching copper ores :advantages of wet-charging
- Rock-dusting in coal mines of the State of Washington
- Gravity concentration on certain Florida phosphatic sands
- The use of boiler feed-water heater with steam-powered rotary drilling equipment
- Active list of permissible explosives and blasting devices approved prior to June 30, 1930.