Section 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;(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.