title: [Occupational hygiene in the grading and concentration of coal].
mesh_terms: D001299:Audiometry; D003032:Coal Mining; D004391:Dust; D004781:Environmental Exposure; D006801:Humans; D009622:Noise; D009787:Occupational Medicine; D012822:Silicon Dioxide
chemical_list: D004391:Dust; D012822:Silicon Dioxide
vernacular_title: Gigiena truda pri sortirovke i obogashchenii uglia.