RT Journal Article SR Electronic T1 Mortality of two groups of women who manufactured gas masks from chrysotile and crocidolite asbestos: a 40-year follow-up JF British Journal of Industrial Medicine JO Br J Ind Med FD BMJ Publishing Group Ltd SP 344 OP 348 DO 10.1136/oem.39.4.344 VO 39 IS 4 A1 E D Acheson A1 M J Gardner A1 E C Pippard A1 L P Grime YR 1982 UL http://oem.bmj.com/content/39/4/344.abstract AB ABSTRACT Two groups of women were exposed to asbestos while manufacturing gas masks in Lancashire before and during the second world war. One group (in Blackburn) is believed to have been concerned almost exclusively with the manufacture of civilian respirators (containing chrysotile) while the other (in Leyland) made respirators for the armed Forces (containing crocidolite) and a much smaller number of civilian respirators. Excess mortality ascribed to lung cancer and ovarian cancer were found at the second factory (statistically significant at the 1% level) but not at the first. Mesothelioma was mentioned on the death certificates of five women who had worked in Leyland and one woman in Blackburn.