The Pacific Northwest National Laboratory is working with US Customs and Border Protection to assist in the installation of
radiation portal monitors. Our challenge was to provide radioactive sources—both gamma and neutron emitting, to a number of
ports of entry where radiation portal monitors are being installed and calibrated. A portable shipping case has been designed
such that it meets the DOT requirements for a “limited quantity” shipment. Over three hundred shipments, both domestic and
international, were made in FY2008 using this type of shipping case.