Search U.S. government technical reports digitized or harvested by TRAIL.
Methods of excavation and roof support used in some recently constructed tunnels
Summary of published information on large-capacity compressed-air receivers for underground mines
Crude-oil and refined products pipe-line mileage in the United States :January 1, 1950
Thallium;its properties, sources, recovery and uses of the element and its compounds,
Petroleum refineries, including cracking plants, in the United States, January 1, 1950
Truck haulage at the National Lead Co. open-cut ilmenite-magnetite mine, Tahawus, N. Y.
The use of dust respirators in coal mines
Fundamentals of smoke abatement
Mining methods and costs at the Highland Surprise Mine, Shoshone County, Idaho
Report of the Health and Safety Division :fiscal year 1949
Electrical blasting at Miami Copper Co., Miami, Ariz.
Permissible mine equipment approved during the calendar years 1947-49
Hydraulic tunneling in St. Peter sandstone at Minneapolis, Minn.
Roof bolting in the United States
Coal-mine explosions and coal- and metal-mine fires in the United States in 1949
Carbide insert bit drilling at the Cleveland-Cliffs Iron Co. mines, Ishpeming, Mich.
List of respiratory protective devices approved by the Bureau of Mines
Achievements in mine safety research and problems yet to be solved
Natural gasoline and cycle plants in the United States, January 1, 1950
Annual report of research and technologic work on coal :fiscal year 1949
Review of dust-allaying practices at working faces in some bituminous-coal and lignite mines
Review of literature on health hazards of beryllium and its compounds
Safety practices in churn drilling at Morenci Branch, Phelps Dodge Corp, Morenci, Ariz.
Report of Petroleum and Natural-gas Branch :fiscal year 1949
Conditions and practices at coal mines in the Ruhr district of western Germany
Guide to prospecting for lode gold
Underground transportation in the Ruhr coal-mining district of Germany
Drilling and blasting, open-cut iron-ore mines, Lake Superior District
Effects of the inhalation of oxygen
Economic importance of pegmatites
Historical r©Øesum©Øe of mine and tunnel ventilation studies, Bureau of Mines, 1910-49
Safety in milling :Magma Copper Co., Superior, Ariz.
Some roof-control practices in coal mines of the United Kingdom
Statistical data on the mechanical cleaning of bituminous coal in the United States
Gas explosions and their prevention
Tunnel construction by peripheral sawing at the Fort Randall Reservoir, Pickstown, S. Dak.
Safety in hoisting at the United Verde Mine, Phelps Dodge Corp., Jerome, Ariz.
Petroleum and natural gas research program Bureau of Mines, fiscal year 1950
Suggestions for inspection of roof-bolt installations
Safety consciousness :an evaluation
Significance of laboratory tests of coal and coke for combustion
Physiological aspects of electrical accidents in the coal-mining industry