{"data":{"id":"us/30-cfr-75.302","jurisdiction":"us","citation":"30 CFR 75.302","heading":"Main mine fans.","body":"Each coal mine shall be ventilated by one or more main mine fans. Booster fans shall not be installed underground to assist main mine fans except in anthracite mines. In anthracite mines, booster fans installed in the main air current or a split of the main air current may be used provided their use is approved in the ventilation plan.","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 D—Ventilation"],"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":"58d94472dfbdac0993d0c20441118caeed200ca5674f9674971d29c688e1c6eb","source_id":"us-cfr","stale":true,"prev":"us/30-cfr-75.301","next":"us/30-cfr-75.310"},"notice":"GroundRules: Original legal text. Not legal advice."}