10 CFR 39.49 - Uranium sinker bars.

§ 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]
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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]