MIL-Q-50531 (NOTICE 1), MILITARY SPECIFICATION: QUARTZITE (GROUND) (FOR USE IN AMMUNITION) (20 MAY 1988)
MIL-Q-50531 (NOTICE 1), MILITARY SPECIFICATION: QUARTZITE (GROUND) (FOR USE IN AMMUNITION) (20 MAY 1988)., MIL-Q-50531(AR), dated 8 May 1970, has been reviewed and determined to be valid for use in acquisition.