Invisible industrial hazard

With the growing use of X rays and gamma rays in the inspection of industrial products, it becomes increasingly important to acquaint both engineers and workers with the dangers to personnel engendered by the rays and with methods of protection from these dangers. Because of the “delayed-action” characteristics which render the radiations one of the most insidious of industrial hazards, safety measures must include not only preliminary protective barrier and distance factors, but must provide for periodic exposure tests and routine measurements of the dose of radiation to which a given worker is subjected.