Patent Number: 062999508
Section: claims

1. A shipping container comprising: 1) an outer container having a wall, a bottom, a dismountable cover and a hollow interior;  2) a liner having sides and a bottom being smaller in every dimension than said outer container;  3) an inner container having a wall, a bottom, a dismountable cover and a hollow interior, said inner container being smaller in every dimension than said liner; and  4) a thermally insulating and energy-absorbing material disposed between said inner container and said outer container in all directions, said thermally insulating and energy-absorbing material consisting essentially of a mixture of 2. A container according to claim 1 wherein that portion of said thermally insulating and energy absorbing material disposed between the cover of said inner container and the cover of said outer container is removable. 3. A shipping container according to claim 1 wherein said thermally insulating and energy absorbing material has a density of approximately 30 pounds per cubic foot. 4. A shipping container according to claim 1 wherein said thermally insulating and energy absorbing material further comprises a component having a high neutron absorption cross section. 5. A shipping container according to claim 4 wherein said component having a high neutron absorption cross section is selected from the group consisting of boron, boron compounds, gadolinium, gadolinium compounds, cadmium, cadmium compounds, europium, europium compounds, hafnium, hafnium compounds, samarium, samarium compounds, and indium alloys. 6. A shipping container according to claim 1 further comprising at least one pressure relief valve in said outer container.