The Nuclear Regulatory Commission (NRC), substantially expanding a key anti-terrorism initiative, says it plans to nearly quadruple the number of companies, hospitals and other users of nuclear materials that will have to report into a national tracking system for radioactive source devices widely used in industry, academia and medicine. The agency, moving to address concerns that such devices could provide raw material for radioactive "dirty" bombs, says it is expanding the tracking system to cover so-called Category 3 and some…
NRC Expands Tracking of Radioactive Source Materials
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