C:
CDC Radiation Emergencies - Information to help people protect themselves during and after radiation emergencies. [U.S. Department of Health and Human Services (HHS), Centers for Disease Control and Prevention (CDC)]

Collection ARRA: Arizona Radiation Regulatory Agency Collection, 1962 - 1972 - National Archives' Archival Research Catalog description for Collection ARRA: Arizona Radiation Regulatory Agency Collection, 1962 - 1972 [U.S. National Archives and Records Administration (NARA)]

D:
Defense Threat Reduction IAC (DTRIAC) - The Defense Threat Reduction Information Analysis Center (DTRIAC) is the key Department of Defense source of information and analysis on nuclear and conventional weapons-related topics. Sponsored by the Defense Threat Reduction Agency, DTRIAC has major reference collections of documents, photographic data, and films and can search, retrieve and perform analyses on DTRA-internal and community-wide nuclear/conventional weapons phenomena, effects and technology matters and related nuclear/conventio [U.S. Department of Defense (DOD)]

Defense Threat Reduction University - With its wealth of expertise and resources, DTRA stands as the Department of Defense's (DOD) leader in weapons of mass destruction (WMD)-related education and training. Through the Defense Threat Reduction University (DTRU), DTRA prepares those in the military, federal government and others to face these threats by providing a unique multi-disciplinary curriculum focusing on various aspects of countering WMD. [U.S. Department of Defense (DOD)]

L:
Low Dose Radiation Research Program - Researches cellular and molecular responses to doses of X-ray or gamma radiation that are at or near current workplace exposure limits [U.S. Department of Energy (DOE), Pacific Northwest National Laboratory (PNNL)]

P:
Personal Annual Radiation Dose Calculator - Radiation dose calculator used to calculate a person's annual average dose [U.S. Nuclear Regulatory Commission (NRC)]

R:
Radiation Emergency Medical Management - Evidence-based data for healthcare professionals about radiation emergencies and how to diagnose and manage victims. [U.S. Department of Health and Human Services (HHS), National Inst. of Health (NIH), National Library of Medicine (NLM)]

Radiation Protection - NRC information on radiation, its affects due to nuclear materials and protective measures [U.S. Nuclear Regulatory Commission (NRC)]