Chromium and nickel.
D000818:Animals; D001194:Asbestos; D002273:Carcinogens; D002840:Chromates / Q000009:adverse effects*; D002857:Chromium / Q000009:adverse effects*; D009783:Dermatitis, Occupational / Q000139:chemically induced; D004781:Environmental Exposure; D004848:Epithelium; D006801:Humans; D008175:Lung Neoplasms / Q000139:chemically induced* / Q000401:mortality; D009532:Nickel / Q000009:adverse effects*; D009669:Nose Neoplasms / Q000139:chemically induced* / Q000401:mortality; D009784:Occupational Diseases / Q000139:chemically induced*; D009787:Occupational Medicine; D010947:Plants, Toxic; D012883:Skin Ulcer / Q000139:chemically induced; D014026:Nicotiana; D014942:Workers' Compensation
D002273:Carcinogens; D002840:Chromates; D002857:Chromium; D001194:Asbestos; D009532:Nickel