Table 14 Task sample airborne fiber concentrations in the Finishing department grouped by job category (1972–1985).

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

Finishing Operator

Overall

5

0.18

0.22

–

0.54

 

1972–1975

1

0.21

–

–

0.21

5

1976–1985

4

0.18

–

–

0.54

2

Craftsman

1976–1985

1

0.05

–

–

0.05

2

Motor Inspector

1976–1985

3

0.37

–

–

0.86

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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