no dust measurements For 1933-45 the concentrations were to be 1.5 times those in 1951 and for as 1-25 times the 1951 values. Seidman et RMA ID: Mortality 820 asbestos Amosite Concentration Fibre Duration of Asbestos Mortality study after al (1986) 020152 Experience of factory workers asbestos of exposure: concentration exposure: short-term work exposure Amosite (100% men) factory Median=50 method used: N=820; exposure producing Asbestos There were no asbestosis seen 31=asbestosis The lower the Factory fibre/mL direct fibre month to at 100 deaths cumulative exposure Workers: count years dose, the longer it took Dose- measurements n=384:<6 for adverse mortality No smoking or exposures experience to become n=241:6-24 history Relationships in this plant. evident and also the n=195:24+ 5 to 40 Years Average fibre smaller the magnitude months After Onset of counts for of that adverse Short-Term each job title mortality. Workers Work were exposure to <25 Exposures estimated from fibre/mL-year measurements cumulative exposure carried out at observed and two other expected deaths from plants 5 to 40 elapsed years operated by since onset work were: the company 109 men exposed to after 1954; 6.0 -11.9 fibre/mL-year one in Tyler, (asbestosis deaths=1;
no dust measurements For 1933-45 the concentrations were to be 1.5 times those in 1951 and for as 1-25 times the 1951 values. Seidman et al (1986) RMA ID: 020152 Mortality Experience of Amosite Asbestos Factory Workers: Relationships 5 to 40 Years After Onset of Short-Term Work Exposures 820 asbestos factory workers (100% men) 31=asbestosis deaths No smoking history Amosite asbestos factory Concentration of exposure: Median=50 fibre/mL Fibre concentration method used: There were no direct fibre count measurements or exposures in this plant. Average fibre counts for each job title were estimated from measurements carried out at two other plants operated by the company after 1954; one in Tyler, Duration of exposure: N=820; month to years n=384:<6 n=241:6-24 n=195:24+ months Mortality study after short-term work exposure The lower the cumulative exposure dose, the longer it took for adverse mortality experience to become evident and also the smaller the magnitude of that adverse mortality. Workers exposure to <25 fibre/mL-year cumulative exposure observed and expected deaths from 5 to 40 elapsed years since onset work were: 109 men exposed to 6.0 -11.9 fibre/mL-year (asbestosis deaths=1; Asbestos exposure producing asbestosis seen at 100 Dose-
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