10 C.F.R. § 39.49 Uranium sinker bars.
Title 10 - Energy
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]
Title 10: Energy
PART 39—LICENSES AND RADIATION SAFETY REQUIREMENTS FOR WELL LOGGING
Subpart C—Equipment
§ 39.49 Uranium sinker bars.
