Search U.S. government technical reports digitized or harvested by TRAIL.
Progress reports :metallurgical division.
Air flow at discharge of fan-pipe lines in mines.
Mining of feldspar and associated minerals in the southern Black Hills of South Dakota
Aerial tramways in the metal-mining industry :construction and operating costs
Developments in coal research and technology in 1937 and 1938
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.
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
Cars for transporting explosives
Portable cabinets for materials used in mineral determinations
Mining and milling methods and costs at Knob Hill Mine, Republic, Wash.
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
Grinding pebbles and tube-mill liners
Are new hazards being introduced in coal mines faster than existing hazards are eliminated