Patent Number: 047524375
Section: claims

1. In a radioactive material packaging, a packaging comprising a packaging body having a substantially U-shaped longitudinal cross-section formed by a bottom and a shell, said bottom and said shell defining a hollow chamber for receiving radioactive material, wherein said bottom and said shell comprise: case means disposed substantially lengthwise of said shell;  a shielding material disposed within said case means, and  a body of metal cast about said case means, said body of metal being substantially free of discontinuities other than discontinuities where said body of metal contacts said case means. 2. A packaging according to claim 1, wherein said shielding material is selected from the group consisting of ceramics, concrete, heavy metals, organic material, boron nitride, boron carbide, graphite and hydrogenous alloys. 3. A packaging according to any of claims 1 or 2, wherein said case means further comprises a heat-resistant material selected from the group consisting of steel pipes, steel plates or ceramics.