Radiation includes alpha rays, beta rays, gamma rays, X-rays, neutrons, high-speed electrons, high-speed protons, and other atomic particles; but such term does not include sound or radio waves, or visible light, or infrared or ultraviolet light. Divisions may have radiation sources in their labs, research, paint spray guns or other areas or equipment. Controls such as caution signs and labels, restricted areas and personal monitoring devices are acceptable. (i.e., skids, chemical drums, salvage material)