Analyses of Samples of Delivered Coal: Collected from July 1, 1915 to January 1, 1922, with a Chapter on the Tidewater Pool Classifications, Issues 226-230

Flame Safety Lamps: Volumes 225-231

Flame Safety Lamps: Volumes 225-231

Coal-mine Fatalities in February, 1923: Issues 2451-2500

Fatalities at Coal Mines in September, 1922: Issues 2376-2450

Some Information on Automatic Coupling of Mine Cars

The Danger of Open Lamps in Coal Mines

Data in Reference to Installation of Cables in Shafts and Boreholes

Suggestions for the Design of Electrical Accessories for Permissible Mining Equipment: Volumes 256-265

State Regulations Pertaining to Hoisting of Men

State Regulations Pertaining to the Use of Internal-combustion Engines in Coal and Metal Mines and in Tunnels

Inspection and Testing of Mine-type Electrical Equipment for Permissibility

Permissible Coal-handling Equipment Approved from January, 1926, to December, 1930, Inclusive: Volumes 340-349

An International Viewpoint on Safeguarding Electrical Equipment Used in Gassy Mines

Permissible Electrically Operated Air Compressors

Inspection and Testing of Mine-type Electrical Equipment for Permissibility: Revision of Information Circular 7185

Permissible Storage-battery Locomotives and Power Trucks

Permissible Electrically Operated Post Drills and Drilling Machines

Approved Explosion-proof Coal-cutting Equipment: Issues 73-78

Explosives Used in April, 1924: Issues 2601-2639