49 C.F.R. § 173.160 Bombs, smoke, non-explosive (corrosive).
Title 49 - Transportation
Bombs, smoke, non-explosive may be shipped provided they are without ignition elements, bursting charges, detonating fuses or other explosive components. They must be packaged in wooden (4C1, 4C2), plywood (4D) or reconstituted wood (4F) boxes, or plywood drums (1D), which meet Packing Group II requirements.
Title 49: Transportation
PART 173—SHIPPERS—GENERAL REQUIREMENTS FOR SHIPMENTS AND PACKAGINGS
Subpart E—Non-bulk Packaging for Hazardous Materials Other Than Class 1 and Class 7
§ 173.160 Bombs, smoke, non-explosive (corrosive).

