PHOTOGRAPHS: Respiratory Technology

Horst Friesen with Engstrom respirator

Horst Friesen with Engstrom respirator

Bird respirator, 1966

Sampling machines and procedures as used on H-7, October 1967

Sampling machines and procedures as used on H-7, October 1967

Sampling machines and procedures as used on H-7, October 1967

MA-1 Respirator, 1968

MA-1 Respirator, 1968

Respirator apparatus, 1968

Respirator apparatus, 1968

Bennett alarm modification using phonojack, 1970

Bennett alarm modification using phonojack, 1970

Bird respirator modification, 1971

Bird respirator modification, 1971

Bird respirator modification, 1971