Document ym1mRJbwvNzoweLDgBZYoE68E

so. Tbe importance of the suspected but unproved ctioi to determining (holt ntei ha* boeo reiterated became It ie likely that euch cases would not bo tscluded la tbe etatletice for tbe general population and bocauoo they Influence tbe roaulte eo markedly. According to the (lndlage la tble etudy, the mortality rate from lung cancer doe* not appear to Increase with longlb of exposure or with degree of dxpoeure, a fact-which presents strong evidence agalnet tbe carcinogenicity of aebcetoe. *. j- Comparison of the experience among the asbestos miners with that of various segments of the unexposed,' comparable population shows that tbs Observed number of deaths among the miners Is not significantly greater than tho oxpectad number. The rate for provod cases among tho aebectcs . miners (25,1 per 100,000) compares well with the rate of 22. 5 per 100,000 for the rost of the Provlace, and 20.8 per 100,000 for adult males throughout the Dominion of Canada. It also compares satisfactorily with rales of 37. 2, 25.3, and 26.0 obtained from various eourcas for adult males In tbe United *i States. Finally, In this.metier of comparison, It would appear that the world wide experience of persons exposed to asbestos dust is not worts with respect to lung'cancer than that of tbe unexposed population. The countlce surrounding the asbestos-producing areas, and In which U le presumed most of the aeboetos miners live, have almost Identical mor tality rates with tbooe of sight counties wldoly scattered through the Province, end are lower than thoee for the rotnelnucr of tho Province, and much iowor Chan the rate for Montreal.