Occupational health and coal conversion.
D000818:Animals; D003031:Coal; D005648:Fuel Oils; D006262:Health; D006801:Humans; D008297:Male; D009316:National Institutes of Health (U.S.); D009369:Neoplasms / Q000209:etiology; D009784:Occupational Diseases / Q000209:etiology; D009787:Occupational Medicine / Q000592:standards*; D010865:Pilot Projects; D011817:Rabbits; D012449:Safety; D014481:United States
D003031:Coal; D005648:Fuel Oils