Friday, July 20, 2012

Tests Through Tunnels (1922)

Army gas mask worn in tests through tunnels on Monongah Division, Baltimore & Ohio R. R.
Arno Carl Fieldner, Sidney H. Katz, Selwyne Perez Kinney. Test of gas masks and respirators for protection from locomotive smoke in railroad tunnels with analysies of tunnel atmospheres.(Washington: Government Printing Office, 1922).