Table 12 Task sample airborne fiber concentrations in the Coke department grouped by job category (1976–1985).

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

Craftsman

1976–1985

23

0.27

0.50

1.01

2.30

2

CO Operator

1976–1985

1

0.001

–

–

0.001

2

  1. Empty (–) values were not calculated because the number of samples were deemed too low. Standard deviations were calculated for all samples with an n of 5 or greater. 95th percentiles were calculated for n of 20 or greater.
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