The regulations in this part governing conduct in and on the Bureau of the Mint buildings and grounds located as follows: U.S. Mint, Colfax, and Delaware Streets, Denver, Colorado; U.S. Bullion Depository, Fort Knox, Kentucky; U.S. Assay Office, 32 Old Slip New York, New York; U.S. Mint, 5th and Arch Streets, Philadelphia, Pennsylvania; U.S. Assay Office, 155 Hermann Street, and the Old U.S. Mint Building, 88 Fifth Street, San Francisco, California; and U.S. Bullion Depository, West Point, New York; are promulgated pursuant to the authority vested in the Secretary of the Treasury, including 5 U.S.C. 301,and,38,and. 177-25 Revision 2), dated August 8, 1973, 38 FR 21947 (1973).