"Some signaling systems in metal-mine shafts."; "Mosier, McHenry.", "Gleim, E. J. (Ernest J.)"; "Mine safety.", "Signals and signaling.", "Mine communication systems."; "Gleim, E. J. (Ernest J.)", "Mosier, McHenry."; "1939"; "

Serial issue. Issued as: United States. Bureau of Mines. Information circular, 7083 (1939:June).

"; ""; "P19470"; "pec"; "Signals and signaling.", "Mine communication systems.", "Mine safety."; "14256"; .