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Progress reports :metallurgical division.

Asphalts from some Wyoming and other asphalt-bearing crude oils

Comparison of manganese steel with carbon steel for detachable-bit drill rods

Limits of inflammability of butadiene in air

Studies of roof movement in coal mines.

Progress reports :metallurgical division.

Survey of fuel consumption at refineries in 1939

Use of subaudible noises for prediction of rock bursts

Activated carbon from coal refuse for water purification

Role of clay and other minerals in oil-well drilling fluids

Performance of subbituminous coal in a typical underfeed domestic stoker

Froth flotation and agglomerate tabling of micas

Carbonaceous cation exchangers from coal and coal refuse

Alunite resources of the United States

Progress reports :metallurgical division.

Progress report :experiments on strength of small pillars of coal in the Pittsburgh bed

Underground transportation of coal :progress report [No.] 2

Cooperative fuel research motor-gasoline survey :Winter 1940-41

Progress reports :metallurgical division.

National safety competition of 1940

Progress reports :metallurgical division.

Determination of types of sulfur compounds in petroleum distillates

Temperatures of natural-gas pipe lines and seasonal variations of underground temperatures

A laboratory study of water encroachment in oil-filled sand columns

Analyses of crude oils from some fields of Oklahoma.

Form of sulfur occurrence in blast-furnace slag

Diesel engines underground.

Preliminary report on the flotation of bauxite

Inflammability of ether-oxygen-helium mixtures :their application in anesthesia

Ignition temperatures of acetylene-air and acetylene-oxygen mixtures

Practical fire sensitivity of liquid-oxygen explosives treated with fire retardants

Safe opening and determination of construction of detonators

Beehive and byproduct coking in Washington

Progress reports :metallurgical division.

Carbon monoxide and particulate matter in air of Holland Tunnel and metropolitan New York.

List of respiratory protective devices approved by the U.S. Bureau of Mines

Lime

Constancy of B. t. u. value of "pure" coal

Carbonizing properties and petrographic composition of Powellton-bed coal from Elk Creek no. 1 mine, Emmett, Logan County, W. Va. :and the effect of blending this coal with Pocahontas no. 3- and no. 4-bed coals

Carbonizing properties and petrographic composition of no. 1-bed coal from Bell no. 1 mine, Sturgis, Crittenden County, Ky. :and the effect of blending this coal with Pocahontas no. 3- and no. 4-bed coals

Carbonizing properties and petrographic composition of Upper Freeport coal from Morgantown District, Monongalia County, W. Va. :and of Lower Freeport coal from eastern Indiana County, near Cambria County, Pa.

Hydrogenation and liquefaction of coal.

Thermodynamic properties of gypsum and its dehydration products

Accidents in the Oklahoma petroleum industry in 1937

Theoretical calculations for explosives.

Coal paleobotany

Increasing the concentration of sulfur dioxide in the effluent gases from Dwight-Lloyd sintering machines treating lead products

Softening water with nonmetallic minerals

Drainage characteristics of Alabama coal

Permissible blasting units


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