TRAIL - Technical Report Archive and Image Library

Re-treatment of mother lode (California) carbonaceous slime tailings

Chemistry of leaching covellite

Analyses of Maryland coals

Coke-oven accidents in the United States :during the calendar year 1928

How leakage of current from an electric shot-firing circuit causes misfires

Accidents at metallurgical works in the United States :during the calendar year 1928

A study of the lubricant fractions of Cabin Creek (W. Va.) petroleum

Intensities of odors and irritating effects of warning agents for inflammable and poisonous gases

Re-forming natural gas

Coke-oven accidents in the United States :during the calendar year 1929

The form of copper in converter slag

Official changes in the active list of permissible explosives and blasting devices for February, 1930

Cracking natural gas in water-gas generators with recovery of carbon black

Effect of sealing on acidity of mine drainage

Re-treatment of mother lode carbonaceous slime tails

Sulphur dioxide in the air at the Pittsburgh experiment station of the U.S. Bureau of Mines

Laboratory and field tests of a permissible indicating methane detector

A study of the Marshall-Bird test for determining the agglutinating value of coal

Washability studies of the Clark Seam at Marvel, Alabama

Grinding and classification.

Nine years of smoke-abatement work at Salt Lake City

Flotation reagents, 1928

Use of ethyl mercaptan to detect leaks in natural-gas distribution systems

Cooperative research between the United States Bureau of Mines and the Safety in Mines Research Board

Toxicity of dichloro-difluoro methane :a new refrigerant

Official changes in the active list of permissible explosives and blasting devices for March, 1930

Roasting of chromite ores to produce chromates :a study of effects of various reagents and impurities on oxidation reactions

The power consumed by rotating disks and other shaped objects in fluid mediums

The sand and gravel safety contest of 1929

A new flame safety-lamp testing and demonstration apparatus

Official changes in the active list of permissible explosives and blasting devices for June, 1930

Dissolution of various manganese minerals

Test of ampoules filled with palladium salt solution for detecting carbon monoxide

Tests of the strength of concrete stoppings designed to resist the pressure of explosions in coal mines

Concentration tests on the mangniferous iron ores of the Cuyuna district, Minnesota

Hauling coal safely with permissible storage-battery locomotives

The lower limits of inflammability of natural gas-air mixtures in a large gallery

Influence of washing coal on coke properties and on gas and by- product yields

Increased recoveries of phosphate in the land-pebble district of Florida

Survey of fuel consumption at refineries in 1929

Review of fatalities in the California petroleum industry during the calender year 1929

Leaching copper ores :advantages of wet-charging

Rock-dusting in coal mines of the State of Washington

Gravity concentration on certain Florida phosphatic sands

The use of boiler feed-water heater with steam-powered rotary drilling equipment

Active list of permissible explosives and blasting devices approved prior to June 30, 1930.

Some experiments on the initiation of coal-dust explosions by gas explosions

Official changes in the active list of permissible explosives and blasting devices for September, 1930

The use and value of air analyses in Illinois mines

Official changes in the active list of permissible explosives and blasting devices for October, 1930

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