{"data":{"id":"us/30-cfr-60.10","jurisdiction":"us","citation":"30 CFR 60.10","heading":"Permissible exposure limit (PEL).","body":"The mine operator shall ensure that no miner is exposed to an airborne concentration of respirable crystalline silica in excess of 50 µg/m 3 for a full-shift exposure, calculated as an 8-hour TWA.","path":["Title 30—Mineral Resources","CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","SUBCHAPTER M—UNIFORM MINE HEALTH REGULATIONS","PART 60—RESPIRABLE CRYSTALLINE SILICA"],"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":"b48599568346a02c6b3526056293e62835731b237638e2931ae709e1c0562ec3","source_id":"us-cfr","stale":true,"prev":"us/30-cfr-60.2","next":"us/30-cfr-60.11"},"notice":"GroundRules: Original legal text. Not legal advice."}