{"data":{"id":"us/30-cfr-75.1317","jurisdiction":"us","citation":"30 CFR 75.1317","heading":"Primer cartridges.","body":"(a) Primer cartridges shall be primed and loaded only by a qualified person or a person working in the presence of and under the direction of a qualified person.\n(b) Primer cartridges shall not be primed until immediately before loading boreholes.\n(c) Only a nonsparking punch shall be used when priming explosive cartridges.\n(d) Detonators shall be completely within and parallel to the length of the cartridge and shall be secured by half-hitching the leg wires around the cartridge or secured by an equally effective method.","path":["Title 30—Mineral Resources","CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","SUBCHAPTER O—COAL MINE SAFETY AND HEALTH","PART 75—MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES","Subpart N—Explosives and Blasting"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-30.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:25:24Z","sha256":"00f6deea3d04dbe257e4685ffd9557584bda2243f79506f94a19fbb5d248d543","source_id":"us-cfr","stale":true,"prev":"us/30-cfr-75.1316","next":"us/30-cfr-75.1318"},"notice":"GroundRules: Original legal text. Not legal advice."}