May 9, 1940 ER.

n c m S.

ETHYL CORPORATION INTER - OFFICE CORRESPONDENCE t o Dr.

ETHYL CORPORATION INTER-OFFICE CORRESPONDENCE TO Miss Emma Fortlage ADDRESS Cincinnati FROM SUBJECT Miss Justine T.

June 16, 1945 Mr.

October 24, 1942 Col. 0.

LTD 45-57 December 14, 1945 DBTBS.iCEmyiQH OF LEAD BY DI5H1SQM A Critical Comparison of the Methods Described In LTD 42=5 and DSM 44-188 PURPOSE (1) To evaluate certain factors in the "mixed-color" method for lead given in LTD 42-5 (2) To compare this method with the "one-color55 method described in DSM 44-188. (3) To check the sulfite reduction method, given in DSM 45=39, for the removal of Iodine from the solutions obtained in the determination of TSL in air.

THE ASSOCIATED ETHYL COMPANY LIMITED LONDON REGULATIONS GOVERNING TEE CLEANING & REPAIRING OF STORAGE TANKS WHICH HAVE CONTAINED LEADED GASOLINE Date of Issue ; November 1945.

March 18, 1946 M r .

March pi, 1948 Dr.

OFFICE OF THE DIRECTOR I^ABORATtt'OSIES OF THE a i^nt ic cnrs"isosipst t as.

129 Betiro Way San Prancisco, California January 14, 1946 Sobert A.

VESTA BATTERY CO.

Au g u s t 9, 1946 fr ' , , 1^ Dr .

Dr.