2005—Subsec. (a). Pub. L. 109–58, § 655(b), substituted “knowingly” for “intentionally and willfully” in introductory provisions.

Pub. L. 109–58, § 655(a), substituted “treatment, storage, or disposal facility” for “storage facility” in par. (2), “a utilization facility licensed under this chapter” for “such a utilization facility” in par. (3), and “, uranium conversion, or nuclear fuel fabrication facility licensed or certified” for “facility licensed” in par. (4) and added pars. (5) to (7).

Subsec. (b). Pub. L. 109–58, § 655(b), substituted “knowingly” for “intentionally and willfully”.

2001—Subsec. (a). Pub. L. 107–56, §§ 810(f)(1), (2), 811 (h)(1)(A), (C), in introductory provisions, struck out “, or who intentionally and willfully attempts to destroy or cause physical damage to” before “—”, and in concluding provisions, inserted “or attempts or conspires to do such an act,” before “shall be fined” and substituted “20 years, or both, and, if death results to any person, shall be imprisoned for any term of years or for life.” for “ten years, or both.”

Subsec. (a)(4). Pub. L. 107–56, § 811(h)(1)(B), substituted comma for period at end.

Subsec. (b). Pub. L. 107–56, §§ 810(f)(1), (3), 811 (h)(2), struck out “or attempts to cause” before “an interruption of normal operation”, inserted “or attempts or conspires to do such an act,” before “shall be fined”, and substituted “20 years, or both, and, if death results to any person, shall be imprisoned for any term of years or for life.” for “ten years, or both.”

1990—Subsec. (a)(4). Pub. L. 101–575, which directed amendment of this section by adding par. (4) after par. (3), was executed by adding par. (4) after par. (3) of subsec. (a) of this section to reflect the probable intent of Congress.

1983—Pub. L. 97–415 designated existing provisions as subsec. (a) and added subsec. (b).