Uranium sinker bars.

10 C.F.R. § 39.49
in effectEffective: 2024-07-01
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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.”

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10 C.F.R. § 39.49 — Uranium sinker bars | Code of Federal Regulations | Corpus