CFR›Title 19›Chapter I›Part 151›Subpart D ContainsSections 151.51–151.55CorpusDaily eCFRDisplayed edition2026-04-24Last updated2026-04-24 Subpart D—Metal-Bearing Ores and Other Metal-Bearing Materials Sections 151.51 § 151.51 Sampling requirements. 151.52 § 151.52 Sampling procedures. 151.53 § 151.53 Sample lockers. 151.54 § 151.54 Testing by Customs laboratory. 151.55 § 151.55 Deductions for loss during processing. Previous C Subpart C—Petroleum and Petroleum Products Next E Subpart E—Wool and Hair