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Table 2 Asbestos exposure levels by process step in Korean asbestos textile industry (1987–1994)

From: Ovarian cancer in a former asbestos textile factory worker: a case report

Period Content Results (geometric mean, fiber/cc) Measurement method
1987 Personal exposure assessment Overall: 4.4
Fiberizing/Mixing: 4.5
Carding: 3.8
Spinning: 5.6
Twisting: 4.8
Weaving: 5.3
Phase Contrast Microscope
Local concentration assessment Overall: 5.7
Fiberizing/Mixing: 8.7
Carding: 6.6
Spinning: 6.6
Twisting: 5.2
Weaving: 5.5
1988–1989 Personal exposure assessment Fiberizing/Mixing: 0.23–3.69
Carding: 0.08–9.44
Spinning: 0.3–9.73
Twisting: 0.08–14.9
Weaving: 0.07–5.6
1990 Personal exposure assessment Carding: 0.38–17.3
Spinning: 0.26–15.0
Twisting: 0.1–12.6
Weaving: 0.28–17.2
1992 Personal exposure assessment Overall: 0.07–0.67
1994 Personal exposure assessment Mixing: 0.22–1.2
Carding: 0.23–9.24
Spinning: 0.41–8.93
Twisting: 0.21–9.83
Weaving: 2.61–11.58
Local concentration assessment Mixing: 0.42
Carding: 0.61–10.93
Spinning: 0.78–3.65
Twisting: 1.01–9.66
Weaving: 3.18