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- Laboratory and field tests of a permissible indicating methane detector
- Privately owned mine rescue stations
- Some check in and out systems for coal mines
- Compressed air for operating modern coal-mining equipment
- Protective clothing in the mining industry
- Mining anthracite without roof-fall accidents at Colonial Colliery, Colonia Colliery Co., Natalie, Pa.
- A million tons of anthracite mined without a fatality
- Methane-indicating detectors prove dependable in sampling air in anthracite mines
- Hazards of compressed-air jets for ventilating gassy mines
- Some phases of haulage accident prevention in anthracite mines