Document 8OKeQ9pQVwm70by3zzx21EXnB

St a n d a r d Oil De v e l o p me n t Co mp a n y Me d ic a l De p a r t me n t 1). W. CALDWELL. M: D. UEDtCAL DIRECTOR l in d e n . Ne w Je r s e y January 5, 195 EFFECTIVE NOVEMBER I, 1949 OUR MAILING ADDRESS WILL BE P.O. BOX SI. LINDEN. N. J. Ethyl Corporation, Eastern Division ^05 Lexington Avenue New York, IT, New York Dear Mr. Baldwin: Att. Mr. A. J. Baldwin I would like to ask the following regarding periodic toxic examinations of certain of our employees working on T.E.L. Is it possible to have lead analysis made, within your company, on the blood, urine and feces of our employees working with leaded substances? We find that local bio-chemical laboratories results are seemingly unsatisfactory. It is my understanding that the technical analysis is rather difficult and I am hesitant to ask our own medical technician to do such tests. Very truly yours, DWCrMLB US* D. W. CALDWELL, M.D.