{"data":{"id":"us/30-cfr-90.209","jurisdiction":"us","citation":"30 CFR 90.209","heading":"Respirable dust samples; report to operator.","body":"(a) MSHA shall provide the operator, as soon as practicable, a report with the following data on respirable dust samples submitted or whose results were transmitted electronically, if using a CPDM, in accordance with this part:\n(1) The mine identification number;\n(2) The locations within the mine from which the samples were taken;\n(3) The concentration of respirable dust, expressed as an equivalent concentration for each valid sample;\n(4) The average equivalent concentration of respirable dust for all valid samples;\n(5) The occupation code;\n(6) The reason for voiding any sample; and\n(7) The part 90 miner's MSHA Individual Identification Number (MIIN).\n(b) Upon receipt, the operator shall provide a copy of this report to the part 90 miner. The operator shall not post the original or a copy of this report on the mine bulletin board.\n(c) If using a CPDM, the person certified in sampling shall print, sign, and provide to each part 90 miner, a paper record (Dust Data Card) of the sample run within one hour after the start of the part 90 miner's next work shift. This hard-copy record shall include the data entered when the sample run was first programmed, and the following:\n(1) The mine identification number;\n(2) The location within the mine from which the sample was taken;\n(3) The concentration of respirable dust, expressed as an equivalent concentration reported and stored for each sample;\n(4) The sampling status conditions encountered for each sample;\n(5) The shift length; and\n(6) The part 90 miner's MSHA Individual Identification Number (MIIN).\n(d) The operator shall not post data on respirable dust samples for part 90 miners on the mine bulletin board.","path":["Title 30—Mineral Resources","CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","SUBCHAPTER O—COAL MINE SAFETY AND HEALTH","PART 90—MANDATORY HEALTH STANDARDS—COAL MINERS WHO HAVE EVIDENCE OF THE DEVELOPMENT OF PNEUMOCONIOSIS","Subpart C—Sampling Procedures"],"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":"793b0928465bc6efeb59c61e9cdca8803ab8ce4e5c40102e9ca67a9b3411d216","source_id":"us-cfr","stale":true,"prev":"us/30-cfr-90.208","next":"us/30-cfr-90.210"},"notice":"GroundRules: Original legal text. Not legal advice."}