The Hearing Conservation Amendment (Part I).
D001299:Audiometry; D004430:Ear Protective Devices; D006801:Humans; D008452:Maximum Allowable Concentration; D009622:Noise / Q000517:prevention & control*; D009623:Noise, Occupational / Q000517:prevention & control*; D014481:United States; D014489:United States Occupational Safety and Health Administration