“Person” means any individual, corporation, company, association, firm, partnership, society, or joint stock company.

“Interstate” or foreign commerce means commerce between any place in a State and any place outside of that State, or within any possession of the United States (not including the Canal Zone) or the District of Columbia, and commerce between places within the same State but through any place outside of that State. “State” includes the District of Columbia, the Commonwealth of Puerto Rico, and the possessions of the United States (not including the Canal Zone).

“Explosive materials” means explosives, blasting agents, and detonators.