Search
Search U.S. government technical reports digitized or harvested by TRAIL.
Keyword Search
1127 results returnedSearch results
- Studies of the Extraction and Coking of Coal and their Significance in Relation to its Structure
- Fluid Flow Through Packed and Fluidized Systems
- [Figure 1. Place and Direction From Which Figures 2 to 7 Were Taken and Relative Positions of Flooded Surface, Buried Valley of the Susquehanna, and Underlying Coal Measures and Mine Workings]
- Anthracite mechanical mining investigations.
- Roof-bolting the Delaware Aqueduct
- Petroleum and natural-gas research program, Bureau of Mines, fiscal year 1951
- Annual report of research and technologic work on coal :fiscal year 1951
- Two-way radio communication at Santa Rita Open Pit, Kennecott Copper Corp., Santa Rita, N. Mex.
- Truck haulage at an iron mine in the Adirondack Mountains, New York
- Economic benefits of systematic roof bolting in Ziegler No. 3 Mine, Bell & Zoller Coal & Mining Co., Williamson County, Ill.,
- List of respiratory protective devices approved by the Bureau of Mines
- A practical method for teaching mine workers and officials use of gas-detecting equipment
- Active list of permissible explosives and blasting devices approved before December 31, 1951
- Petroleum refineries, including cracking plants, in the United States, January 1, 1952
- Filling with unclassified tailing in modified cut-and-fill stopes, Dayrock Mine, Wallace, Idaho
- Recommendations for improved shuttle-car-haulage safety
- Economies through roof bolting in an Indiana coal mine
- Underground storage of natural gas in coal-mining areas
- Production of manganese slags for manufacturing high-grade ferromanganese by blowing oxidation spiegeleisen
- State compensatory provisions for occupational diseases
- Industrial minerals of the Pacific northwest
- Volumetric determination of small quantities of Uranium,with special reference to errors associated with use of Jones reductor
- Hazard of firing open, unconfined shots in coal mines
- Some thermodynamic values for ferrous oxide
- Ignition of coal dust by permissible explosives
- Synthetic liquid fuelsannual report of the Secretary of the Interior for 1951.
- The thermodynamics of combustion gases :general considerations
- Beneficiation of oxide manganese ores from Arapahoe, Douglas, Saguache, Custer, Chaffee, and Park Counties, Colorado
- Some thermodynamic properties of silicon carbide
- Water flooding in Nowata County, Okla., oil fields
- Modified longwall mining with a German coal planer (plow) in the Pocohontas No. 4 coal bed, Helen, W. Va.
- Development of new, experimental coke oven
- A selected bibliography of coal gasification
- Concentration tests on various base-metal ores
- Investigation of the Colorado Copper Co. properties, Mesa, and Montrose Counties, Colo.
- Treatment tests of scheelite ores and tailings
- Development of a rotary test drill
- Recovery of lithium from spodumene-amblygonite mixtures
- Bumpus pegmatite deposit, Oxford County, Maine
- Electrolytic manganese tests in cooperation with industry
- Separation and utilization studies of bitumens from bituminous sandstones of the Vernal and Sunnyside, Utah, deposits. !n Part I,
- Centrifugal testing apparatus for mine-structure stress analysis
- Experimental treatment of barite ores from Montgomery County, Ark. and Morgan County, Mo.
- North Dakota sodium sulfate deposits
- Investigation of gas explosions in Brighton, N.Y., September 21, 1951
- Pilot-plant batch retorting of Colorado oil shale
- Refractory properties of Pacific Northwest chromites
- Flammability of amyl nitrite
- Separation of lead, cadmium, and germanium sulfides from zinc sulfide concentrates
- Anthracite mechanical-mining investigations:progress report 7: longhole retreat mining of a steeply pitching anthracite bed
