{"data":{"id":"us/30-cfr-56.4531","jurisdiction":"us","citation":"30 CFR 56.4531","heading":"Flammable or combustible liquid storage buildings or rooms.","body":"(a) Storage buildings or storage rooms in which flammable or combustible liquids, including grease, are stored and that are within 100 feet of any person's work station shall be ventilated with a sufficient volume of air to prevent the accumulation of flammable vapors.\n(b) In addition, the buildings or rooms shall be—\n(1) Constructed to meet a fire resistance rating of at least one hour; or\n(2) Equipped with an automatic fire suppression system; or\n(3) Equipped with an early warning fire detection device that will alert any person who could be endangered by a fire, provided that no person's work station is in the building.\n(c) Flammable or combustible liquids in use for day-to-day maintenance and operational activities are not considered in storage under this standard.","path":["Title 30—Mineral Resources","CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","SUBCHAPTER K—METAL AND NONMETAL MINE SAFETY AND HEALTH","PART 56—SAFETY AND HEALTH STANDARDS—SURFACE METAL AND NONMETAL MINES","Subpart C—Fire Prevention and Control"],"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":"f9f6334b8654101d91d0e4acf1fe599450c69c43aa5b8439e8503dff9b034320","source_id":"us-cfr","stale":true,"prev":"us/30-cfr-56.4530","next":"us/30-cfr-56.4600"},"notice":"GroundRules: Original legal text. Not legal advice."}