April 3, 1941 Mr. 0.

cc: Dr.

September Id , 1947 Mr.

The tubjrot of *noraal load* has boon ein tensively investigated by Kehoe and hi a associates (1333*1933) Jour, of Xnd* Hyg.1933 - A rticl* ready for publication 1939 - Citation to bo providsd later* probably in Jour* Biol, Chao* -who have found that the normal American adult excretes lead at the rate of 0.25 to 0,^0 nm^u per day* Host of thia lead le present In the feces* the urinary output amounting only to 0-02 to 0,10 aga, per day* (0,02 to D.OS ags, per liter).

PHONE (202) 833-3721 CENTER FOR SCIENCE IN THE PUBLIC INTEREST 1346 CONNECTICUT AVENUE, N.W., ROOM 812 WASHINGTON, O.

PRESIDENT rv.-.NK A. rA T i ' i *r v Mo:crs Co'p- ' V M i i> ' a u iW A ve D-''rc:t 2.

February 16, 1943 Dr.

February 1047.

Caracas: November 24, 1939 Dr.

THE ASSOCIATED ETHYL COMPANY LIMITED iTieg.Ojfice:THE ADELPHI, LONDON, W.

\ COP Y TREASURY DEPARTIRENT Public Health Service WASHINGTON August 7, 1934 Mr.

,September 20 1950 Prentis-Wabers Products Company, Wisconsin Hitpids# Wisconsin.

( March 12, 1955 CONFIDENTIAL Mr.

8 June 194-3 Dr.

Dr * Gr a h ran E d g a r Et h y l Ga s o lin e Co r p o r a t io n Ch r ys le r Bu ild in g lieu Yo r k Ci t y Hew Yo r k De a r Gr aham * I th in k you a r e q u it s r ig h t in h a vin g ce r t a in r e s e r v a t io n s about th e a d v is a b ilit y o f p r o vid in g t e t r a e t h y l le a d fo r use as an in s e c t ic id e in t h e m a n n er a d v o c a t e d b y Mr . ?