Table 1.
Key cohort characteristics and their exposure (based on arithmetic mean monthly concentration per sampling point)
| No of workers in cohort | Professionally exposed | |||||||
| No of workers in cohort professionally exposed (%) | Median work duration in professionally exposed jobs (years) | Median cumulative dust exposure (mg/m3 years) | Median cumulative fibre exposure (fibre/cm3 years) | Median average dust exposure intensity (mg/m3) | Median average fibre exposure intensity (fibre/cm3) | |||
| Gender | ||||||||
| Men | 22 463 | 20 665 (92) | 9.3 | 31.4 (0.01–1641.4) | 19.3 (0.01–408.1) | 3 (0.4–100) | 1.8 (0.4–32.0) | |
| Women | 13 374 | 9783 (73) | 10.9 | 49.4 (0.01–1184.4) | 32.9 (0.01–399.8) | 4.5 (0.1–100) | 3.1 (0.1–43.2) | |
| Birth cohort category | ||||||||
| <1930 | 3610 | 2902 (80) | 18.8 | 88.2 (0.06–1641.4) | 42 (0.01–399.8) | 4.5 (1.2–100) | 1.8 (0.6–43.2) | |
| 1930–1939 | 6226 | 5547 (89) | 20.2 | 92.1 (0.04–1078.1) | 50.5 (0.03–408.1) | 4.6 (0.7–100.0) | 2.2 (0.6–32) | |
| 1940–1949 | 5190 | 4510 (87) | 13.2 | 54.1 (0.02–718.1) | 34.4 (0.01–220.3) | 3.6 (0.5–29.8) | 2.1 (0.4–11.9) | |
| 1950–1959 | 8883 | 7468 (84) | 8.2 | 27.7 (0.01–409.2) | 18.1 (0.01–178.4) | 3.1 (0.2–28.3) | 1.9 (0.–11) | |
| 1960–1969 | 5979 | 5020 (84) | 5.7 | 18.2 (0.01–364) | 12.2 (0.01–165) | 2.9 (0.1–30.1) | 1.9 (0.2–9.4) | |
| 1970 on | 5949 | 5001 (84) | 4.1 | 13.4 (0.01–270.7) | 8.9 (0.01–116.8) | 3.0 (0.1–27.7) | 1.9 (0.1–12) | |
| Year of first job period | ||||||||
| 1930–1955 | 3436 | 3268 (95) | 25.1 | 118.5 (0.12–1641.4) | 54.1 (0.01–408.1) | 5.5 (1.5–100) | 1.8 (1–43.2) | |
| 1955–1964 | 4938 | 4611 (93) | 20 | 90.4 (0.07–940.4) | 49.9 (0.04–296.3) | 4.6 (0.7–54.6) | 2.2 (0.6–16.2) | |
| 1965–1974 | 7219 | 6331 (88) | 12.2 | 48.7 (0.02–392.2) | 31.8 (0.01–220.3) | 3.4 (0.5–24.3) | 2.0 (0.5–10.2) | |
| 1975–1984 | 8857 | 7226 (82) | 7 | 22.5 (0.01–409.1) | 14.8 (0.01–165) | 3.1 (0.1–28.3) | 1.9 (0.2–10) | |
| 1985–1994 | 6034 | 4784 (79) | 4.9 | 17.6 (0.01–328) | 11.2 (0.01–140.6) | 2.9 (0.1–30.1) | 1.9 (0.2–11) | |
| 1995 on | 5353 | 4228 (79) | 4.1 | 13 (0.03–181.6) | 8.5 (0.02–95.6) | 2.9 (0.1–27.6) | 1.6 (0.1–12) | |
| Work location | ||||||||
| Factories | Total | 10 180 | 8984 (88) | 10.7 | 53.4 (0.04–1123.1) | 38 (0.03–408.1) | 5.3 (0.1–100) | 3.8 (0.1–43.2) |
| Men | 3974 | 3724 (94) | 10.1 | 50.3 (0.07–1123.1) | 35.2 (0.06–408.1) | 5.4 (0.2–86.4) | 3.8 (0.4–20.2) | |
| Women | 6206 | 5260 (85) | 11 | 54.8 (0.04–1044.2) | 39.3 (0.03–371.6) | 5.1 (0.1–100) | 3.7 (0.1–43.2) | |
| Mine/ external rail | Total | 17 781 | 14 076 (79) | 9.3 | 25.9 (0.01–1236.6) | 15.2 (0.01–96.2) | 2.8 (0.4–53.5) | 1.7 (0.4–2.4) |
| Men | 13 429 | 11 987 (89) | 9.1 | 24.9 (0.01–1236.6) | 14.8 (0.01–96.2) | 2.8 (0.4–53.5) | 1.6 (0.4–2.4) | |
| Women | 4352 | 2089 (48) | 10.7 | 32.0 (0.01–865.2) | 18 (0.01–92) | 3 (0.5–53.4) | 1.7 (0.6–2.4) | |
| Both | Total | 7876 | 7388 (94) | 9.7 | 41.4 (0.01–1641.4) | 26 (0.01–399.8) | 4.4 (0.1–100) | 2.7 (0.2–37.3) |
| Men | 5060 | 4954 (98) | 9.3 | 36.6 (0.07–1641.4) | 22.9 (0.03–318.8) | 4.2 (0.5–100) | 2.5 (0.5–37) | |
| Women | 2816 | 2434 (86) | 10.5 | 50.1 (0.01–1184.4) | 33.6 (0.01–399.8) | 4.7 (0.1–100) | 3.2 (0.2–37.3) | |
| Total | 35 837 | 30 448 (85) | 9.9 | 37.2 (0.01–1641.4) | 23.4 (0.01–408.1) | 3.4 (0.1–100) | 1.9 (0.1–43.2) | |