June 19# 19^3 (19) Dr.

M r.

SB INCORPORATED EXECUTIVE OFFICES (FORMERLY THE ELECTRIC STORAGE BATTERY COMPANY) 2 PENN CENTER PLAZA, PHILADELPHIA, PENNSYLVANIA September 2 7 , 1 9 & 8 (215) l o c u s t 4-4030 MAIL: P.O.

Res ea r c h l a b o r a t o r i es Di v i s i o n GEN ERA L M O T O RS CO RPO RA T IO N POST OFFICE BOX 188, NORTH END STATION D ET RO IT 2, M IC H IG A N July 7, 1949 Dr* R*| A* Kehoe Collets of Medicine Univeijsity of Cincinnati Eden Avenue Cincinnati 19, Ohio ~ Dear ^ob: Your opinion on a matter pertaining to lead intoxication would be very welcome* Questions regarding the effects of small changes in the composition of lead solder (between 2 and 1Q$ tin up to 1% arsenic or antimony and 90$ or more lead) have been raised by some of our executives* In your opinion could these small changes, especially the reduction of the tin content to less than 1Q$ be related to an increase in the absorption of solder dust into the human system possibly due t<j> greater solubility, scalier particle size, or other phenomena* Do you think that research into this phase of the subject would be warranted in seeking an explanation of an increase in either blood or urinary leads or symptoms of intoxication in persons engaged in soldejr application and solder removal.

A B B O T T LA BO R A T O R I E S r e s e a r c h d i v i s i o n N O RTH CH I CA GO ROBERT D .

D r.

/ November 1, 1950 Mr.

K?

CALIFORNIA RESEARCH CORPORATION RICHMOND, CALIFORNIA MEETING-"WITH DR.

24r, Roy L.

INTER OFFICE CORRESPONDENCE E t h y l Ga s o l in e Co r po r a t io n CH RYSLER BU ILD IN G . 405 Le x in g t o n Av e n u e N e w Y o r k A p r i l I S , 19 H Dr.

November 19 19^0 Dr.

9t>^ Jwi; Er* A* J* Baldwin ^s#,.

ETHYL CORPORATION PETROLEUM CHEMICALS DIVISION RESEARCH LABORATORIES 1600 WEST EIGHT MILE ROAD FEENDALE, MICHIGAN48220 January 20, 1965 Dr.

fa i October 18, 1950 D r .