Performance characteristics of dust respirators, bureau of mines approved and non-approved types.
D000336:Aerosols; D004391:Dust; D004781:Environmental Exposure; D005374:Filtration / Q000592:standards; D007501:Iron; D007854:Lead; D008906:Mining; D009784:Occupational Diseases / Q000517:prevention & control*; D011009:Pneumoconiosis / Q000517:prevention & control; D012822:Silicon Dioxide; D013455:Sulfur; D012122:Ventilators, Mechanical / Q000592:standards*; D015032:Zinc
D000336:Aerosols; D004391:Dust; D007854:Lead; D013455:Sulfur; D012822:Silicon Dioxide; D007501:Iron; D015032:Zinc