Table 11 Representative workday sample airborne fiber concentrations in the Central Maintenance department grouped by job category (1972–2006).
From: Occupational exposure to asbestos in the steel industry (1972–2006)
Fiber Concentration by PCM (fibers/cc) | |||||||
|---|---|---|---|---|---|---|---|
Job Title | Time Period | n | Mean | SD | 95th percentile | Max | PEL |
Mechanical Maintenance | Overall | 24 | 0.26 | 0.30 | 0.70 | 1.10 | |
1972–1975 | 15 | 0.41 | 0.29 | – | 1.10 | 5 | |
1986–1993 | 9 | 0.01 | 0.01 | – | 0.03 | 0.2 | |
Brake Repairman | Overall | 4 | 0.01 | – | – | 0.02 | |
1976–1985 | 2 | 0.02 | – | – | 0.02 | 5 | |
1986–1993 | 1 | 0.02 | – | – | 0.02 | 0.2 | |
1994–2006 | 1 | 0.01 | – | – | 0.01 | 0.1 | |
Insulator | 1976–1985 | 3 | 0.08 | – | – | 0.09 | 2 |
Motor Inspector | 1976–1985 | 1 | 0.01 | – | – | 0.01 | 2 |
