27 C.F.R. § 555.23 List of explosive materials.
Title 27 - Alcohol, Tobacco Products and Firearms
The Director shall compile a list of explosive materials, which shall be published and revised at least annually in the [T.D. ATF–290, 54 FR 53054, Dec. 27, 1989, as amended by T.D. ATF–446, 66 FR 16602, Mar. 27, 2001]
Title 27: Alcohol, Tobacco and Firearms
PART 555—COMMERCE IN EXPLOSIVES
Subpart C—Administrative and Miscellaneous Provisions
§ 555.23 List of explosive materials.

