Various shots of technicians at work in computer room, checking instruments, pushing buttons, gas control room. Profile CU of man's face as he works. Interior shot of gas gun chamber, clutter of scientific equipment, technicians at work. CU of name "Computing Devices of Canada Limited" on equipment. Interior shot of gun chamber, man opening port. CU of hand holding pellet, inserting it into gun. Various shots of technician, safety door with sign "Close for Firing" being closed in preparation for firing. (00/07/1966)