US Patent 7444946 Material management apparatus, systems, and methods

In some embodiments, an apparatus that can be used to contain radiation sources, explosives, and other material transported as cargo may include layers of lead, tungsten, plastic, paraffin, armor, and heat absorbing material to surround an interior portion, as well as a lockable port to provide access to the interior portion. In some embodiments, activities may include detecting various conditions associated with the layers or cargo, and impeding access to the interior portion responsive to detecting the conditions.