PHMSA has terminated the Explosive (EX) classification approvals listed below. PHMSA published a Federal Register Notice on May 4, 2021, notifying the approval holders listed below that PHMSA intended to terminate their approvals for failure to provide proof that the approved explosives successfully completed the UN Test Series 6(d) of Part I of the UN Manual of Tests and Criteria. The notice advised approval holders that they must either show why their approvals should not be terminated or apply for a modification of their approval prior to June 3, 2021.

FOR FURTHER INFORMATION CONTACT: Mrs. Harpreet Singh, Chief, Energetic Materials Branch, Sciences and Engineering Division, 202–366–4535, PHMSA, 1200 New Jersey Avenue SE, Washington, DC 20590–0001.