Document jggYNp2B7nae26knredEMNBa5

Hy a tte n tio n has been p a lle d to a s it u a t io n which c o n ta in s th e elem en ts o f a s e r io u s menace to th e p u b lio h e a lth Thomas M Id g le y , and h is coworkers ( J * I n d . End* C hera., 14 894, 1 9 2 2 ), employed In the re se arch s t a f f o f the G en eral Motors C o rp o ra tio n a t D a y to n , O h io , have d isco v e re d th at c e r t a in com pounds when In tro d u ced In to the g a s o lin e a o t as "A ntiknock* o r "Com pressionizers" in th a t they prevent the knocking In engines ru n n in g a t low speed or a t h ig h com pression* The most im p ortan t o f th ese compounds are d te th y lse le n ld e and t e t r a e th y l lead A t th e p r e s e n t tim e th e Dye Works P la n t o f K* X . duPont de Nemours and Company (th e duPont Company c o n t r o ls the G e n e ra l M otors) i s preparin g to m anufacture 20,000 g a llo n s o f le a d t e t r a e th y l per dav and i t is reported th a t arrangem ents have been p e r f e c t e d w ith th e S ta n d a rd O i l Company o f New J e r s e y t o d i s t r i b u t e the same. In th e p re lim in a ry work o f m anufacture o f le a d t e t r a e t h y l sev era l very serious cases of lead poisoning have re s ta te d . I t i s proposed to employ le a d t e t r a e th y l in g a s o lin e i n the p rop ortion o f 2 ,6 co per gallon This is eq u ivalen t to approxi m ately 1 p a rt o f le a d te tr a e th y l in 740 p a rts o f g a s o lin e . The lead is elim in ated from the engine exhaust in the form o f oxides o f le a d , p r in c ip a lly lith a r g e , as an exceedingly fin e d u st. The burning o f 1 g a llo n o f g a so lin e w i ll throw in t& .th e atm osphere t h is d u st to approxim ately the amount of 4 grams and sin c e th e average autom obile engine w i l l consume 2 g a llo n s o f g a s o lin e per h o u r, 8 grams o f lith a r g e d u st w i l l r e s u l t . ! :,0 W T lFL. R eap edtfully forw arded, approved , H. E. Dyer Aoting Director* % - v , ./