Recent Articles on Petroleum and Allied Substances: Issues 2090-2119; Issues 2121-2129

Stone Cutting and Polishing

Bentonite

Fire and Ventilation Doors in Metal Mines

Industrial Insulation with Mineral Products

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

Silica

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

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

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

Official Changes in the Active List of Permissible Explosives and Blasting Devices for September, 1929: 1929

The Analytical Distillation of Petroleum and Its Products: Issues 206-210