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

Oil-shale: an Historical, Technical, and Economic Study

Commercial Possibilities of the Texas-New Mexico Potash Deposits: Volumes 309-316

Suggested Methods for the Reduction of Mine Accidents from the Viewpoint of the Safety Engineer

The Value of Leakage Tests on Natural-gas Transmission Lines: Issues 2735-2736

Metal Carbonates: Correlations and Applications of Thermodynamic Properties, Issues 379-385

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

The Wet Thiogen Process for Recovering Sulphur from Sulphur Dioxide in Smelter Gases: A Critical Study, Issues 131-140

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

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