this subsection shall not apply with respect to sums received from disposal of property under the Atomic Energy Community Act of 1955 [
42 U.S.C. 2301 et seq.] or the Strategic and Critical Materials Stockpiling Act, as amended [
50 U.S.C. 98 et seq.], or with respect to fees received for tests or investigations under the Act of
May 16, 1910, as amended (
30 U.S.C. 7); and