Maintenance of electrical mine equipment from viewpoint of safety inspector

Subjects: “…Mining machinery Electric equipment Safety measures.…”

Experiments on mine-fan performance

Subjects: “…Mine ventilation Equipment and supplies. http://id.loc.gov/authorities/subjects/sh86001781.…”

Tests of gas masks and respirators for protection from locomotive smoke in railroad tunnels with analyses of tunnel atmospheres

Subjects: “…Respirators (Medical equipment) http://id.loc.gov/authorities/subjects/sh97008479.…”

Training with mine-rescue breathing apparatus

Subjects: “…Respirators (Medical equipment) http://id.loc.gov/authorities/subjects/sh97008479.…”

Oxygen mine rescue apparatus and physiological effects on users

Subjects: “…Respirators (Medical equipment) http://id.loc.gov/authorities/subjects/sh97008479.…”

Mine rescue standards, tentative study

Subjects: “…Respirators (Medical equipment) http://id.loc.gov/authorities/subjects/sh97008479.…”

Preliminary investigations of storage battery locomotives; specifications, laboratory tests, permissible schedule

Subjects: “…Railroad equipment industry. http://id.loc.gov/authorities/subjects/sh85110876.…”