Patent Number: 
Section: claims

1. A method of making a storage/transport container for radioactive material, the method comprising the step of: subdividing a chamber formed between an inner shell and an outer shell into first and second compartments by means of a foraminous partition having a predetermined maximum mesh size;  introducing into one of the compartments an aggregate of a predetermined minimum particle size greater than the predetermined maximum mesh size; and  introducing into the first compartment a suspension of cement and water such that the aggregate remains in the one compartment and the cement and water flow through the partition into the second compartment  7 . 2. The container-making method defined in  claim 1  wherein the partition is formed by a perforated screen, plate, or netting. claim 1 3. The container-making method defined in  claim 1  wherein the mesh size is between 2 mm and 4 mm. claim 1 4. The container-making method defined in  claim 1 , further comprising the step of claim 1 supporting the partition between the shells on webs bridging the chamber and bearing on the shells. 5. The container-making method defined in  claim 1  further comprising the step of claim 1 supporting the partition between the shells on an inner array of inner webs and an outer array of outer webs. 6. The container-making method defined in  claim 5  wherein the partition is shaped to fit complementarily with the inner and outer webs. claim 5 7. The container-making method defined in  claim 5  wherein the inner and outer webs are arrayed in pairs interconnected by respective inner and outer bridges secured to the respective shells. claim 5 8. The container-making method defined in  claim 5  wherein the partition is welded to the webs. claim 5 9. The container-making method defined in  claim 1  wherein the one compartment is the second compartment, whereby the aggregate and cement/water suspension are introduced into the same compartment. claim 1 10. The container-making method defined in  claim 9  wherein the one and second compartment are an inner compartment adjacent the inner shell, the other and first compartment being an outer compartment adjacent the outer shell. claim 9