Browse TRAIL Inventories

Tunnel driving methods used at the Ojuela unit of the Compania Minera de Penoles, S.A., Ojuela, Durango, Mexico

The significance of solvent analysis as applied to coal

Turquoise

List of permissible self-contained oxygen breathing apparatus, gas masks, and hose masks

Milling methods and costs at the Montana mine concentrator of the Eagle-Picher Lead Co., Ruby, Ariz.

Topaz

Survey of cracking plants :January 1, 1931

Explosions in Tennessee coal mines

Magnesite

Mining laws of the Dominican Republic

Mining laws of Hungary

Revision of the free energy of formation of sulphur dioxide

Suggestions for wiring permissible equipment

Progress in metal-mine ventilation in 1930

Quartz and silica.

Milling methods and costs at the Arthur and Magna concentrators of the Utah Copper Co.

Significant features of wire-saw operation in Europe

Milling methods and costs at the Verde Central concentrator, Jerome, Ariz.

Opals

A comment upon present-day applied geophysics

Essential factors influencing subsidence and ground movement

Milling practice of the Kirkland Lake Gold Mines (Ltd.), Kirkland Lake, Ontario

Fatalities in Tennessee coal mines

Factors involved in the heap leaching of copper ores

Garnets (gem stones)

Method and cost of quarrying limestone at the quarry of the Trinity Portland Cement Co., Fort Worth, Tex.

Specially recommended trailing cables

Umber, sienna, and other brown earth pigments

Bismuth

Zirconium.

Zirconium.

Milling methods and costs at the concentrator of the Treadwell Yukon Co., Ltd., at Tybo, Nev.

Thallium

Mining methods and costs at the Champion Copper Mine, Painesdale, Mich.

Mining methods and costs at metal mines of the United States

Tourmaline

Utilization of dolomite and high-magnesium limestone

Production of explosives in the United States during the calendar year 1930

Safety at the Old Dominion copper mine, Globe, Ariz.

Geophysical abstracts.

Mine explosions and fires in the United States during the fiscal year ending June 30, 1931

List of permissible mine equipment

Feldspar gems :(Amazon stone, Moonstone, Sunstone, etc.)

Practical rules for the use of the magnetometer in geophysical prospecting

Mining laws of Latvia

Mining practices, methods, and costs at Elkoro mines, Jarbidge, Nev.

Geophysical abstracts.

Deep mining methods, conglomerate mine of the Calumet and Hecla Consolidated Copper Co.

Geophysical abstracts :no. 27

Mining laws of Palestine


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