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NEW YfJRC TINiES ' New York, New York January 9, 1961 . , Role of A uto Exhaust in Cancer Calle+d S'rnallbyG.1W1. Engrneer :. DETROIT, Jan. 8' (AP)-A does, Mr. Begeman said, its con+ Generali Motors engineer said~tt•ibtuion would be 10 per cent.- t'odav that the automobile cen- Mr. Begeman cited studies b?: technique for collectine chemi- active than benzpyrene. on part of a continuing research Emgine exhaust tars and program in whic2i General 3So- crankcase blow-by contain min- tors is cooperating with, thelute amounts of twenty-four aro- Sloan-Kettering Institute of matic hybrocarbons, Mr. Bege- New York. Iman said, of which seven, are Mr. Begeman developed aknown carcinogens, but' less vention meeting here, reportd study. cent of the benzpyrene in city eentartions of' benzpyrene, is atmosphere came trom other bne with a very high traffic sources. . ' density and also is beset with It is produced, by burning coal, atmospheric inversions and aa fuel oil, natural gas and rub- natural ventilation problem. " bishl The amount of benzpyrene is Mr. Begeman, speaking. be- city atmosphere rises during the fore the Society of Automotive heating season, according to re+ Engineers at' ity - opening con- sults of a Public Health Service partment, said that 90 to 98' per iaving one of the lowest con- "" research, engineer in the com-l °As, an example;'" Mr. Bege- pany'§ fuels }nd lubricants de- an said, "Los Angeles a ci:y t1ributed only 2'to 10 per cent of a possible carAer-causing chem- ical in the atmiosphere: 'Chart•les R. Begeman, senior ca>i% from automobiie exhaust as ' Mr. Begeman found also that part of thte air pollution study: r•.-uper octane" fuels, such as Sloan-Kettering chemists ana- isoctane and diisobutylene pro- lyzed these "tara,"' duce less tar in their exhaust the, air as carb.nn mnnoxide dred frem foisign countries. According tGr Mr. Begemar., than does commercial Rasoline. 1f benzpyrene from automobile Be_nspyrene in blow-by gas exhaust settles out of the air in from the crankcase was less the same way lead does, motor than 4 per cent of the total traffic's contribution to the given off by the engine. total amount of the chemicat' in The five-day convention, which the atmosphere would be 2' per began today at, Cobo Hall, has cent. more than 30,000 engineering If the chemical remains In delegates, including severali hun- zne united 3tates Public Health- • Service that showed that varia- tions in benzpyrene density in the air were not related to traf- fGc density. f, ':uFiRL+ ,~ 9U_[e. S29 f8'{C!' , _ . . ~_ , :..