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

Steaming Tests of Coals and Related Investigations: September 1, 1904, to December 31, 1908, Issues 23-25

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

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

Occurrence, Properties, and Preparation of Limestone and Chalk for Whiting: Issues 395-399

Iron Oxide Mineral Pigments of the United States

Hand Firing Soft Coal Under Power-plant Boilers

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

Annual Report of Research and Technologic Work on Coal: Fiscal Year 1940

Why and how Coke Should be Used for Domestic Heating

The Significance of Drafts in Steam-boiler Practice

Dewatering Clay Suspensions by Spray Evaporation

Analyses of Iowa Coals

Typical Analyses of Coals of the United States: Issue 446

Low-rate Combustion in Fuel Beds of Hand-fired Furnaces

Combustion Experiments with North Dakota Lignite

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

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

Washing and Coking Tests of Coal and Cupola Tests of Coke Conducted by the United States Fuel-testing Plant at St. Louis, Mo., January 1, 1905, to June 30, 1907: Issues 1-12

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