A licensee may use a uranium sinker bar in well logging applications only if it is legibly impressed with the words "CAUTION: RADIOACTIVE-DEPLETED URANIUM. NOTIFY CIVIL AUTHORITIES (or company name) IF FOUND."
Minn. R. agency 144, ch. 4731, WELL LOGGING, pt. 4731.7140
Statutory Authority: MS s 144.1202; 144.1203