Document 3NaM3GBZVKv5mLqnqN6vM6z1y

FILE NAME Newspaper & Magazine Articles NMA DATE 1970 Mar 22 DOC NMA043 DOCUMENT DESCRIPTION NYT - Chemical Links to Cancer Cited CHEMICAL LINKS TO CANCER CITED Doctors Tall of Problems in Detecting the Causes Society's Doctors at the American cer 12th science writ- ers seminary here recalled seminary Pott's yesterday they servation in 1775 as cphoeicnktiendg out the difficulties in cheruicalscomplexities inging the Interactions Interactions of these Since Dr. Pott recognized that chimney sweepers got scrotal Dr. Pott entereed nteredasthe . learned from have chimney gathered evidence since gatheredgathered about other carcinogans from the industrialindustrial exposures of A partial list of known carcinogens lianiklemdents which the allments are coal oil sunlight creosote crude mineral bladder tumors contained tumors from oil in aniline dyes bone cancers hung tu mors called _ from radium mesotheliomas mesotheliomas known from cers from cigarettescigarettes chromate nadusst al Best lung cancer from Dr. cancer Jonathan sJoonacthaniety'Es. Rhoads the presidentpresident : To the extent that pro- the danger these taken, hfarvoem sources hashas been proportion- ately reduced Interval Scientists said here that long ubiquitous to manymany ubiquitous exposures Interval large which ert subtle doses could exyet lethal manifes- NYT 3/22/70 3/22/70 Doctors called their scrotal cancer adding wart Dr.Pott wrote adding " never saw under the age of puberty is I , which suppose one reason why it Dr. Pott surgeon disease as cancer diagnosed it In those about four to the unpleasant , small boys years old had of removing of these so t people their hard their early most early early singular seems sinsinggular ular infancyPott infancy infancy they sometimes hot chimneys they are bruised burned almost where and almost suffocated have they chance to clean have the grimy at StB.artholomew at in London a Bartholomew HospHiostpiatall ers get their many of these to ada aw get chimney cancers focused on single cinogens in the general envir onment Further past ments have a chemical work said Relatively study Dr. Umberto Saffiotti ass0- clate scientific director for car cinogenesis at the National Cancer Institute in Bethesda work been the combined effects of suros to two or more on the same animal Shubik and Dr. | used hamsters carcinogen ef a carcinogen carcinogen called ethylnitrosamine and a common dust ferric oxide DEN injections are known to cause lung cancers in about 5 cent of test animals Dr. SaffinttiSaffintti said Ferric oxide dust ianloanneimdaoiess BnuottwchaeunsethceasneceEXr-s perimenters DEN Injerted chalhlenagedmsters witthhe msmuasltl 70doses of ferric oxide per cent of the ani- mais developed lung cancers Extrapolating from Ruch studies in humans is diffkult the scientists xairi Results from these continu Ing studies however are mak ing some catrer investigators look harder at the THE environment carcinogens si^<ch as the Ono " Mill riliserind in RONTVENO wlth Herren od ta Preeti Aner Dretrer cormretien ertttited altive? memtedan