Official Changes in the Active List of Permissible Explosives and Blasting Devices for August, 1930: 1930-1931

Ochers and Mineral Pigments of the Pacific Northwest Occurrence: Possible Methods of Preparation, and Testing of Ochers, Siennas, and Colored Clays, Issues 301-311

Recent Articles on Petroleum and Allied Substances: 1920-1921

The Ignition of Firedamp by Exposed Filaments of Electric Mine-lamp Bulbs

Talc and Soapstone: Their Mining, Milling, Products and Uses: Issues 213-216

Effect of Cooling Systems on Evaporation Losses of Gasoline

Fire and Ventilation Doors in Metal Mines

Sources of Limestone, Gypsum, and Anhydrite for Dusting Coal Mines to Prevent Explosions: Volumes 240-247

Stone Cutting and Polishing

Industrial Insulation with Mineral Products

The Mineral Industry and the Young Engineer

Electric Shot-firing in Mines, Quarries, and Tunnels: Volumes 240-247

Tests of Commercial Solution Used to Reduce the Hazard of CO Poisoning in Garages

Recovery of Gold from Black Sand by Classifier Concentration

Analyses of Iowa Coals

Test of Gas Masks and Respirators for Protection from Locomotive Smoke in Railroad Tunnels with Analysies of Tunnel Atmospheres

Permeability of Oxygen Breathing Apparatus to Gasoline Vapors: Issues 2064-2065

The Diesel Engine: Its Fuels and Its Uses, Volumes 156-160

Experimental Studies on the Effect of Ethyl Gasoline and Its Combustion Products: Report of the United States Bureau of Mines to the General Motors Research Corporation and the Ethyl Gasoline Corporation

Warning Agents for Fuel Gases, by A.C. Fieldner, R.R. Sayers, W.P. Yant, S.H. Katz, J.B. Shohan, and R.D. Leitch: Issue 10, Volume 1