Updated in its third edition to address regulatory changes, this highly technical handbook is intended to provide information necessary for safety and compliance with government regulations in work with radioactive substances. It addresses regulations for training personnel, and for acquisition and disposal of radioactive substances. The book provides methods for radiation dose calculations, describes measurement and monitoring procedures and equipment, gives detailed practical information, discusses findings of studies of radiation exposure of human populations, and analyzes related public health issues. Rather than merely presenting methods of protection, the handbook also explains theories about sources of radiation including beta and gamma particles, x-rays, and neutrons. An appendix presents calculation problems, and a comprehensive index makes the handbook useful as a reference for situation-specific theory and protocols. Extensive bibliographic resources are included.