title: Unknown variables: assessing risks in the semiconductor industry.
mesh_terms: D005740:Gases / Q000009:adverse effects / Q000032:analysis; D006801:Humans; D009784:Occupational Diseases / Q000139:chemically induced*; D009786:Occupational Health Services; D011634:Public Health; D012306:Risk; D012666:Semiconductors / Q000592:standards; D014481:United States
chemical_list: D005740:Gases