Home › USC › Title 18 › Chapter 4018 U.S.C. Chapter 40 — IMPORTATION, MANUFACTURE, DISTRIBUTION AND STORAGE OF EXPLOSIVE MATERIALS§ 841— Definitions§ 842— Unlawful acts§ 843— Licenses and user permits§ 844— Penalties§ 845— Exceptions; relief from disabilities§ 846— Additional powers of the Attorney General§ 847— Rules and regulations§ 848— Effect on State law