27 C.F.R. § 19.91 — Operating permit.
§ 19.91 Operating permit. (a) Except as provided in paragraph (b) of this section, a person must obtain an operating permit under the IRC in order to: (1) Distill for industrial use; (2) Warehouse spirits for industrial use; (3) Denature spirits; (4) Warehouse spirits (without bottling) for nonindustrial use; (5) Bottle or package spirits for industrial use; (6) Manufacture articles; or (7) Engage in any other distilling, warehousing, or processing operation not required to be covered by a basic permit under the Federal Alcohol Administration Act (49 Stat. 978; 27 U.S.C. 203, 204). (b) Exception. The requirement to obtain an operating permit does not apply to an agency of a State, or political subdivision of a State, or an officer or employee of, and acting for, such an agency. (26 U.S.C. 5171, 5271)