27 C.F.R. § 18.51
(b) Record of processing material. A proprietor shall maintain a record, by kind and quantity, of processing material used.
(Approved by the Office of Management and Budget under control number 1513-0022)
[T.D. ATF-104, 47 FR 23921, June 2, 1982, as amended by T.D. ATF-381, 61 FR 37003, July 16, 1996; T.D. TTB-196, 89 FR 87937, Nov.6, 2024]