Radioactive Safety-Control System (Feb, 1954)
This man was later diagnosed with the only known case of wrist cancer.
Radioactive Safety-Control System
Radioactive crystals and Geiger tubes make a punch press at a United Air Lines maintenance base accident proof. Operators of the press wear wristbands containing the “hot” crystals. Three Geiger tubes enclose the punching area. If hands stray into danger, the tubes pick up radiation from the wristbands and instantly halt the machine â€”even in midstroke. The machine will not run unless the operator wears the bands.