title: The long debate over belt air.
authors.forename: Marc
authors.initials: M
authors.lastname: Barrera
mesh_terms: D000062:Accidents, Occupational / Q000517:prevention & control*; D000328:Adult; D003032:Coal Mining / Q000295:instrumentation / Q000331:legislation & jurisprudence* / Q000592:standards; D005107:Explosions / Q000517:prevention & control*; D005390:Fires / Q000517:prevention & control*; D006801:Humans; D007750:Labor Unions; D008875:Middle Aged; D016272:Occupational Health / Q000331:legislation & jurisprudence*; D011057:Politics; D012449:Safety / Q000331:legislation & jurisprudence* / Q000592:standards; D014481:United States; D014691:Ventilation / Q000295:instrumentation / Q000379:methods / Q000592:standards*