[Code of Federal Regulations] [Title 10, Volume 1] [Revised as of January 1, 2005] From the U.S. Government Printing Office via GPO Access [CITE: 10CFR39.49] [Page 631] TITLE 10--ENERGY CHAPTER I--NUCLEAR REGULATORY COMMISSION PART 39_LICENSES AND RADIATION SAFETY REQUIREMENTS FOR WELL LOGGING --Table of Contents Subpart C_Equipment Sec. 39.49 Uranium sinker bars. The licensee may use a uranium sinker bar in well logging applications only if it is legibly impressed with the words ``CAUTION-- RADIOACTIVE-DEPLETED URANIUM'' and ``NOTIFY CIVIL AUTHORITIES (or COMPANY NAME) IF FOUND.'' [65 FR 20345, Apr. 17, 2000]