Search U.S. government technical reports digitized or harvested by TRAIL.
The effect of oxygen on gaseous hydrogen sulphide corrosion of tank steel
Re-treatment of fine washed coal from the Black Creek and Mary Lee Beds on coal washing tables
A study of the properties of Texas polyhalite pertaining to the extraction of potash.
Inflammability of mixed gases :mixtures of methane, ethane, hydrogen, and nitrogen
The splicing of rubber-sheathed trailing cables
Deviation of natural gas from Boyle's law
Sampling and exploration by means of hammer drills
Motor-Gasoline Survey, August, 1931.
Guarding trolley wires in mines
Index to Geophysical Abstracts :no. 21 to no. 32
Notes pertaining to safety inspections of permissible electric mine equipment
Data in reference to installation of cables in shafts and boreholes
Rock-dust does stop or limit mine explosions
A mechanically driven level rock tunnel
Milling methods and costs at the lead concentrator of the Hecla Mining Co., Gem, Idaho
Methods and costs of concentrating scheelite ore at the Silver Dike Mill, Mineral County, Nev.
Milling methods and costs at the Pecos Concentrator of the American Metal Co., Tererro, N. Mex.
Gold mining and milling methods and costs at the Vallecito Western Drift mine, Angels Camp, Calif.
Factors governing the selection of the proper level interval in underground mines
A ventilation study of the Graceton Coal & Coke Co. mine, Graceton, Pa.
Falls of roof and coal in Washington mines
Accident experience and cost in Pennsylvania anthracite and bituminous mines :1926-30
Milling methods and costs at the Hillside Fluorspar mines, Rosiclare, Ill.
Magnetic concentration methods and costs of Witherbee, Sherman & Co., Mineville, N.Y.
Method and cost of dredging sand and gravel, Portland Gravel Co., Portland, Oreg.
Mining laws of the Republic of Liberia
Mining laws of Denmark and Danish possessions
Mining laws of the Unfederated Malay States
Natural-gasoline plants in the United States :January 1, 1932
Physiological factors in mine ventilation in 1931
Survey of cracking plants, January 1, 1932
Mining and technology graduates and their problems