June 21, 1956 D r.

JLemtlJiMtgafirfjFi^giAsaiMsfaatiraa, me J E A N V U IL L E Q U E Z .

January 5, 1954 Mr.

April 6, 1951 Dr.

A/ . ' s y\\4- ETHYL CORPORATIONAn-> 'jtV* An v- / V' >,c,.

TO FROM ETHYL CORPORATION IK TER-O EEICE MEMORANDUM CG: NE YORK SAFETY J. 0.

Cin c in n a ti, Ohio June 20, 1955 Dr* 0 B* Willoughby Chemloal Department Experimental Station B* I. duPont do Wamours and Co* Wilmington, Delaware Dear Dr* Willoughby I fool that I owe you an apology for not batring at least acknowledged tha receipt of your letter of January 22nd long before thle* I hare your last letter written May 29th* During the past two weeks I hare been so busy with calculations it was impossible for me to write s suitable answer to your letter* It was very con siderate of you to forward the details of the bismuth separation prior to the publication of your paper* In looking through my file I find that I have lost the only copy of my letter to you dated Jaraxary 7th* If you still have this letter, would it be convenient for you to send mm a copy?

Riker Laboratories, inc Los Angeles, Calif 7 October 1952 P. 0.

LEAD INDUSTRIES ASSO CIATION 420 Lexington Avenue NewYork17, N.

\ U.

Ethyl Corporation Confidential CONTACT REPORT Company : Socony Mobil Oil Co., Inc.

1500 Rhodi Island Avanua, N.

-------------- LEAD INDUSTRIES ASSOCIATION -- *4 EAST Mat STREET Near YORK IT, N.

LIA17536 LEAD INDUSTRIES ASSOC!

.da&moNAL ISFUR&VTIGtl X-ray tl<&u of the chests o sway (not all.) o the c;z in the older aye ^roup The* terminal aai'-splcs (in addition to those in ,Uy .ma June, were obtained in July unci ugust; these inclmicu specimens ox both urine nmh blood.