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abrasive wheels ABRASIVE-WHEEL Accident hazards adequate American Standards area bend branch pipes Brief Description buffing operations Clean clothes code compensation connected Danger Description of Operations dimensions dry grinding Dust Hazards Dust Prevention elbow emery wheels employees Employment of Women enclosures especially excessive tuberculosis exhaust systems fatigue feet per minute foot velocity found fumes grinding and polishing ground hair harmful Hayhurst Hazards and Preventive header pipe health problem Hoods Illinois inches of water industrial infection injury inspected installation JOBS less measure metal dust Metal grinding minimum air velocity occupations Ohio Oil Dermatitis ointment operation of abrasive particularly pipe diameters Pitot tube plants point poisonous Preventive Methods process produce a minimum protection reach Recommendations remove Repetitive Motion required safe operation serious skin smooth surface Sources of information special motion tests thighs throat usually velocity per minute velocity pressure wage earner wash wet grinding women have special Women's Bureau study workers wrist