title: Dust conditions in brick plants of Ontario.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D004391:Dust / Q000032:analysis* / Q000517:prevention & control; D004651:Employment; D004781:Environmental Exposure; D005860:Germany, West; D006801:Humans; D008297:Male; D008452:Maximum Allowable Concentration; D008875:Middle Aged; D009787:Occupational Medicine; D009790:Occupations; D009864:Ontario; D011859:Radiography; D012822:Silicon Dioxide / Q000032:analysis*; D012829:Silicosis / Q000000981:diagnostic imaging; D013548:Sweden; D013997:Time Factors; D014961:X-Ray Diffraction
chemical_list: D004391:Dust; D012822:Silicon Dioxide