[Code of Federal Regulations] [Title 19, Volume 2] [Revised as of April 1, 2003] From the U.S. Government Printing Office via GPO Access [CITE: 19CFR151.53] [Page 194] TITLE 19--CUSTOMS DUTIES CHAPTER I--UNITED STATES CUSTOMS SERVICE, DEPARTMENT OF THE TREASURY PART 151--EXAMINATION, SAMPLING, AND TESTING OF MERCHANDISE--Table of Contents Subpart D--Metal-Bearing Ores and Other Metal-Bearing Materials Sec. 151.53 Sample lockers. A suitable place or containers shall be provided for the safekeeping of all Customs samples under Customs lock or seal.