Dust concentrations in stone crushing operations.
STERN
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BALIFF
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D004391:Dust; D006920:Hygiene; D007221:Industry; D008511:Medicine; D009784:Occupational Diseases; D009787:Occupational Medicine; D009790:Occupations; D011009:Pneumoconiosis
D004391:Dust
INDUSTRY AND OCCUPATIONS/hygiene; INDUSTRY AND OCCUPATIONS/medicine; PNEUMOCONIOSIS/in stone crushing industries