The Air-Mate 2000 self-contained breathing apparatus (SCBA) from 3M OH & ESD is designed for workers who require respiratory protection in environments that are immediately dangerous to life and health (IDLH). The NIOSH-approved SCBA offers an optional airline connection that enables the wearer to remain in IDLH atmospheres for extended periods of time.3M Occupational Health & Environmental Safety Division, St. Paul, MN.