Search U.S. government technical reports digitized or harvested by TRAIL.
Concentration of gravity tailings from the Grasselli deposit, Park City, Utah
Amargosa (Esperanza) Molybdenum-Copper Property, Pima County, Ariz.
Gila fluorspar district, Grant County, N. Mex.
Manganese Products Corp.'s Morgan Group :Dona Ana County, New Mexico
Capitan iron deposits, Lincoln County, N. Mex.
Zonia Copper Mine, Yavapal County, Ariz.
Iron Mountain beryllium deposits, Sierra and Socorro Counties, N. Mex.
Segerstrom-Heizer Iron Property :Pershing County, Nev.
Stauber Copper Mine, Guadalupe County, N. Mex.
Crow Branch lead-zinc diggings and vicinity, Grant County, Wis.
Last Chance Zinc Mine, Grant County, Wis.
Use of scrapers and other light earth-moving equipment in bituminous-coal strip mining
Fluorite and zinc on the Eva Tanguay property, Crittenden County, Ky.
Control of sulfur content of sponge iron produced in rotary kilns
Sampling the Fox and Mills tailing piles, Lafayette County, Wisconsin
Little Pittsburg Lead-Zinc Mine, Shoshone County, Idaho
Phelps Stokes iron deposit :Nye County, Nev.
Chromiferous sand deposits in the Coos Bay area, Coos County, Oreg.
Magnetic surveys :Dannemora magnetite district , Clinton County, N.Y.
McCoy iron deposit, Lander County, Nevada
Drum Mountain Manganese Project :Juab County, Utah
Exploration of Fluorite Ridge Fluorspar District, Luna County, N. Mex.
Lincoln County iron deposits, New Mexico
Apex Copper Property, Coconino County, Ariz.
Extinction of isobutane flames by carbon dioxide and nitrogen
San Antonio Canyon lead-zinc deposits, Presidio County, Tex.
Diamond drilling and diamond bit investigation
J.D. Price fluorite deposit, Crittenden County, Ky.
Iron deposits, Iron County, Utah
Determination of carbon monoxide by absorption in the Haldane-type gas-analysis apparatus
Diesel equipment in underground mining
German high-temperature coal-tar industry
Transportation of iron ore, underground mines, Lake Superior district
Wash and change houses at American mines
Utilization of natural gas for chemical products
Potash mining in Germany :1945
Diamond drilling blast holes, Balmat Mine, St. Lawrence County, N.Y.
Some observations on German coal research and developments
Accident experienceiron-ore mines - Lake Superior district 1940-45
Pott-Broche coal-extraction process and plant of Ruhr©·ol G. m. b. H., Bottrop-Welheim, Germany