Cohort description and distribution of cases and risk sets by exposure level
| Plant | All plants | 1. Reading, Pennsylvania | 2. Hazleton, Pennsylvania | 3. Elmore, Ohio | |
| No of cases | 293 | 218 | 30 | 45 | |
| No of non-cases | 5143 | 3337 | 583 | 1223 | |
| Mean N in risk set | 2831.9 | 1971.8 | 322.6 | 537.4 | |
| Median value for mean exposure (μg/m3) among cases | No lag | 15.42 | 25.00 | 1.443 | 0.885 |
| 10-year lag | 15.15 | 25.00 | 1.443 | 0.972 | |
| Median value for cumulative exposure (μg/m3-days) among cases | No lag | 2843 | 2895 | 3968 | 1654 |
| 10-year lag | 2583 | 2832 | 3648 | 1449 | |
| Median value for maximum exposure (μg/m3) among cases | No lag | 25.00 | 25.10 | 3.150 | 2.170 |
| 10-year lag | 25.00 | 25.00 | 3.150 | 2.170 | |
| No of cases with potential asbestos exposure | 100 (34%) | 68 (31%) | 16 (53%) | 16 (36%) | |
| No of cases who were professionals | 26 (9%) | 21 (10%) | 3 (10%) | 2 (4%) |