Search U.S. government technical reports digitized or harvested by TRAIL.
Northgate fluorspar, Jackson County, Colo.
Concentration of manganese ores from Lincoln County, Nev.
Virginia marl deposits, New Kent County, Va.
Beneficiation of western manganese ores
Catron and Sierra Counties tin deposits, N. Mex.
Diamond drilling of potash reserves in Eddy County, N.Mex
Industrial uses of limestone and dolomite
Recent engineering developments in Switzerland on gas turbines and steam generators
Diamond-drill-core storage at Mount Weather Testing Adit
Natural-gasoline and cycle plants in the United States, January 1, 1946
Geophysical abstracts 126July-September 1946
Diamond-drilling blast holes, eastern magnetite "Mine B"
Gallatin corundum deposit, Gallatin County, Mont.
Winskell-Andrews-Lyne zinc deposits, Lafayette County, Wis.
Bush-Hutchins ilmenite, Roanoke County, Va.
Effect of hydrocarbons and other gases upon the explosibility of acetylene
Reduction of phosphorus content in iron ore and concentrate from Iron Mountain, Mo.
Ione-Carbondale clays, Amador County, Calif.
Laboratory methods for evaluating materials for mineral-wool production
Ore dressing investigation of oxidized lead ores from Missouri and Illinois
Investigation of the Argall (Baggaley) zinc-lead mine, Iowa County, Wis.
Support of ground, iron-ore mines, Lake Superior district
Shaft sinking by diamond drilling, Bellefonte mine, National Gypsum Co., Centre County, Pa.
Emergency escapeways from coal mines
Magnetometric survey of the Mahopac magnetite mine, Putnam County, N.Y.
Investigation of the Sauk Mountain limestone deposits, Skagit County, Wash.
Investigation of the Minah lead-silver mine, Jefferson County, Mont.
Investigation of Arkansas bauxite.
Natural-gasoline and cycle plants in the United States, January 1, 1948
Ignition qualities of hydrocarbons in the diesel-fuel boiling range
A skull breaker in a limestone quarry
Making iron powder in the tunnel kiln
Design and operation of electrical mechanisms in underground pumping plants.
Methods of producing ultra-clean coal for electrode carbon in Germany
Safe equipment, guards, and practices, Lake Superior district iron-ore mines
Methods used in evaluating adsorbent clays
Development of a successful hard-surfaced bit for drilling oil shale
Correll zinc mine, Lehigh County, Pa.
Lead and zinc deposits of the Treasure Hill mines, Ophir mining district, Tooele County, Utah
Yakobi Island nickel deposit, Sitka Mining District, Alaska
Elimination of iron in ammonium sulfate process for production of alumina from clay
Sidney Mine, Pine Creek Area, Shoshone County, Idaho
Studies on methods for recovering scrap mica from pegmatite of the Black Hills, South Dakota