Radiation practices among the 4 Carbide Plants at Oak Ridge, Tennessee, and Paducah, Kentucky, were evaluated, and uniform standards and criteria for handling U, Th, Np, and Pu were developed. Values for the permissible limits of internal and external radiation exposure published in the most...

For experiments to be reproducible, it is important to have a known and controlled environment. This requires isolation from the surroundings. For security experiments, e.g. with hostile software, this is even more important as the experiment can affect the environment in adverse ways. In a...