Idaho Code § 39-2101: Explosives to be marked.

It shall be unlawful for any person or persons, partnership or corporation, to sell or offer for sale, or take or solicit orders of sale, or purchase, or use, or have on hand or in store for the purpose of sale or use, in any state, any high explosive, unless on each and every box or package and wrapper containing any high explosive, there shall be plainly stamped or printed the name and place of business of the person or partnership or corporation by whom or which the same was manufactured, and the exact and true date of its manufacture, and the percentage of nitroglycerin or other high explosive contained therein.