TRAIL - Technical Report Archive and Image Library

Sand-and-gravel safety contest of 1931

Selective oiling and table concentration of phosphatic sands in the Land-Pebble district of Florida

Laboratory batch still and fractionating column for the production and study of lubricating distillates under vacuum

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

Construction of master mechanical oscillator for testing seismic recorders and other allied apparatus

Molybdenum

Sampling and exploration by means of hammer drills

Motor-Gasoline Survey, August, 1931.

Guarding trolley wires in mines

Methods and costs of mining and preparing sand and gravel at the Clowdy Plant of the Dallas Washed and Screened Gravel Co., Dallas, Tex.

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

Quarrying methods and costs at the Sloan quarry of the United States Lime Products Corporation, Sloan, Nev.

Milling methods and costs at the lead concentrator of the Hecla Mining Co., Gem, Idaho

Mining methods and costs at the Mt. Hope mine of the Warren Foundry and Pipe Corporation, Mt. Hope, N.J.

Shaft-sinking methods, practices, and costs of the Consolidation Coal Co. at its no. 261 mine, Caretta, McDowell County, W. Va.

Method and cost of quarrying limestone at the Milltown quarry of the Louisville Cement Co., Milltown, Indiana

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.

Quarrying and crushing methods and costs at the Santa Catalina Island quarry of Graham Bros., Inc., Santa Catalina Island, Calif.

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

Methods and costs of mining and crushing gypsum at the mine of the Blue Diamond Corporation, Ltd., Arden, Nev.

A ventilation study of the Graceton Coal & Coke Co. mine, Graceton, Pa.

Falls of roof and coal in Washington mines

Mica-mining methods, costs, and recoveries at no. 10 and no. 21 mines of the Spruce Pine Mica Co., Spruce Pine, N.C.

Accident experience and cost in Pennsylvania anthracite and bituminous mines :1926-30

Milling methods and costs at the concentrator of the Britannia Mining & Smelting Co., Ltd., Britannia Beach, B.C.

Milling methods and costs at the Hillside Fluorspar mines, Rosiclare, Ill.

Employee-timekeeping system and mechanical pay-roll methods at Britannia Mining & Smelting Co. (Ltd.), Britannia Beach, B.C.

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 Poland

Mining laws of the Republic of Liberia

Mining laws of Denmark and Danish possessions

Mining laws of Haiti

Mining laws of the Unfederated Malay States

Mining laws of Greece

Natural-gasoline plants in the United States :January 1, 1932

Mining laws of Finland

The mineral industry

Physiological factors in mine ventilation in 1931

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