Search U.S. government technical reports digitized or harvested by TRAIL.
Annual report of research and technologic work on coal :fiscal year 1948
Investigation of the Andersonville bauxite district, Sumter, Macon, and Schley counties, Ga.
Estimated plant and operating costs for producing gasoline by coal hydrogenation
Prospect drilling for phosphates in Florida
The National Safety Competitions of 1944-47
Formation sampling with large-diameter drill holes at Fort Randall Dam site, South Dakota
Quarrying methods and practices, U.S. Lime Products Corp., Clark County, Nev.
Questions and answers on propane and butane fuels
Publications of the Bureau of Mines on coal washing
Bibliography of investment and operating costs for chemical and petroleum plants
Review of literature on conditioning air for advancement of health and safety in mines.
Petroleum refineries, including cracking plants, in the United States, January 1, 1949
Average heating values of American coals :by rank and by states
Observations of safety practices and conditions in Japanese coal mines
Report of Petroleum and Natural-gas Division :fiscal year 1945
Operations and safety at the Retsof Rock Salt Mine
Conveyor systems in underground iron-ore mines, Lake Superior district
Fire fighting facilities at four Pennsylvania bituminous-coal mines
Reopening and developing a small red-iron-ore mine, Gadsden, Ala.
Method and cost of driving the Rock Creek Tunnel, Hecla Mining Co., Shoshone County, Idaho
Phosphate rock mining in southeastern Idaho
Report of Petroleum and Natural-gas Branch :fiscal year 1948
Mining methods at the brucite deposit, Basic Refractores, Inc., Gabbs, Nye County, Nev.
Change houses in the Lake Superior district
Methods and costs of mining fluorspar from a flat-bedded deposit at Cave-In-Rock, Ill.
Two devices to prevent electric arcs with airdox operations in coal mines
Selected list of references on minerals and related subjects
Mechanical mining in some bituminous-coal mines.
Investigation of limestone deposits near Arlington, Snohomish County, Wash.
Investigation of Whitehorse limestone deposits, Snohomish County, Wash.
Missouri Valley Manganese Deposits, South Dakota.
Investigation of Ely mine copper deposit Orange County, Vt.
Sampling of Helen Beryl pegmatite Custer County, S. Dak.
Investigation of Chestatee copper and pyrite deposit Lumpkin County, Ga.
Studies of the kinetics of coal hydrogenation
Concentration of oxide manganese ores from the Tintic district, Eureka, Juab County, Utah
Diamond drilling at the Rambler copper mine, Albany County, Wyo.
Investigation of the Strawberry tungsten deposit, Madera County, Calif.
Investigation of Oat Hill mercury mine Napa County, Calif.
Investigation of Comet Coalition lead-zinc deposit, Lincoln County, Nev.