Observed (Obs) and expected (Exp) numbers of cancer cases (all sites, lung and nasal cancer) and standardised incidence ratios (SIR) with 95% CI during 1967–2011 among workers at Tornio Works with employment >5 years, by department
| All sites | Lung cancer | Nasal cancer | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Department | Obs | Exp | SIR | 95% CI | Obs | Exp | SIR | 95% CI | Obs | Exp | SIR | 95% CI |
| Chromite mine | 18 | 12.2 | 1.48 | 0.88 to 2.33 | 1 | 1.8 | 0.55 | 0.01 to 3.04 | 0 | 0.03 | 0.00 | 0.00 to 137 |
| Sintering plant | 9 | 11.0 | 0.82 | 0.37 to 1.55 | 1 | 1.8 | 0.57 | 0.01 to 3.17 | 0 | 0.03 | 0.00 | 0.00 to 145 |
| Ferrochromium smelter | 17 | 17.9 | 0.95 | 0.55 to 1.52 | 4 | 2.8 | 1.41 | 0.38 to 3.61 | 0 | 0.04 | 0.00 | 0.00 to 89.2 |
| Stainless steel melting shop | 20 | 19.3 | 1.03 | 0.63 to 1.59 | 2 | 2.6 | 0.76 | 0.09 to 2.76 | 0 | 0.05 | 0.00 | 0.00 to 72.2 |
| Hot rolling mill | 3 | 4.4 | 0.68 | 0.14 to 1.98 | 1 | 0.5 | 1.95 | 0.05 to 10.9 | 0 | 0.01 | 0.00 | 0.00 to 272 |
| Cold rolling mill | 42 | 43.4 | 0.97 | 0.70 to 1.30 | 2 | 5.1 | 0.39 | 0.05 to 1.40 | 0 | 0.01 | 0.00 | 0.00 to 34.6 |
| Maintenance | 31 | 33.2 | 0.93 | 0.64 to 1.32 | 2 | 5.2 | 0.39 | 0.05 to 1.39 | 0 | 0.07 | 0.00 | 0.00 to 50.0 |
| Total | 207 | 202.6 | 1.02 | 0.89 to 1.16 | 19 | 26.3 | 0.72 | 0.44 to 1.12 | 0 | 0.44 | 0.00 | 0.00 to 8.37 |