Resources GOVERNMENT AGENCIES U.S. Nuclear Regulatory Commission (NRC) U.S. Environmental Protection Agency (EPA) U.S. Department of Transportation (DOT) Pipeline and Hazardous Materials Safety Administration (PHMSA) INTERNATIONAL AGENCIES International Atomic Energy Agency (IAEA) International Air Transport Association (IATA) International Civil Aviation Organization (ICAO) REGULATORY GUIDES & NUREGS NRC Regulatory Guides Consolidated Guidance about Materials Licenses (NUREG-1556) INDUSTRY STANDARDS American National Standards Institute (ANSI) American Society for Testing and Materials (ASTM) International Organization for Standardization (ISO) National Council on Radiation Protection & Measurements (NCRP) International Commission on Radiological Protection (ICRP) INFORMATION ABOUT RADIATION U.S. Nuclear Regulatory Commission (NRC) U.S. Environmental Protection Agency (EPA) AFFILIATED SOCIETIES Health Physics Society Health Physics Journal American Association of Physics Teachers EDUCATIONAL INFORMATION Periodic Table Chart of the Nuclides Nuclear Structure and Decay Databases Nuclear Structure and Decay Tools