The remedy against the United States provided by sections
1346
(b) and
2672 of title
28, by the Act of March 9, 1920 (
46 App. U.S.C. 741–752), or by the Act of March 3, 1925 (
46 App. U.S.C. 781–790), as appropriate, for injury, loss of property, personal injury, or death shall apply to any civil action for injury, loss of property, personal injury, or death due to exposure to radiation based on acts or omissions by a contractor in carrying out an atomic weapons testing program under a contract with the United States.