Document 0gXqgVn97Lk1ZqvbLzgEV15NM

16 other pollutants may accelerate the morbidity. One form of air pollution which is easily studied in individuals is smoking. . Selikoff t al_.199 recently studied the mortality of 370 asbestos insulation workers. in this group 24 men died of lung cancer and all had a history of smoking. (See Table 1 below.) This rate was eight times greater than the expected mortality rate, with age and smoking habits taken into account. TABLE 1 DEATHS OP ASBESTOS INSULATION WORKERS 1H NEW YORK, 1963-67199 (By Smoking Habits) Smokina Habits Never smoked regularly History of pipe, cigarsmoking only History of regular . cigarette smoking Total No. of Cases 48 39 283 370 Observed Deaths 0 0 . 24 24 Expected Deaths O.OS 0.13 2.98 3.16 aAll with more than 20 years from onset of exposure. bIncludes cigarette smokers who also smoked pipes or cigars. The blue asbestos, 1crocidolite, from South Africa is believed by many53'79'136' 140,209 to jje muCh more carcinogenic than the other .minerals of asbestos. Studies in Finland Indicate that anthophyllite also produces cancer. Wagner, 8000 1429 PRODUCED BY FORD