MIL-M-82021B (NOTICE 1), MILITARY SPECIFICATION: MONORAIL TRACK BEAM SYSTEMS FOR TROLLEY SUSPENDED HOISTS (12 NOV 1991) [S/S BY ANSI-MH27.1-81]

MIL-M-82021B (NOTICE 1), MILITARY SPECIFICATION: MONORAIL TRACK BEAM SYSTEMS FOR TROLLEY SUSPENDED HOISTS (12 NOV 1991) [S/S BY ANSI-MH27.1-81]., MIL-M-82021B(YD), dated 29 December 1984, is hereby canceled. Future acquisition of this material should refer to ANSI MH27.1-1981