GENERAL OFFICES 2501 HUDSON ROAD ST.

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,Sum 25 im Mr. 0, B* Lewis Ethyl Gasoline Corporation Chrysler Building New York City New York . !

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Septem ber 11* 19j6 ' . ' . ' ' B r /g d n s .

July 9# 1950 Mr* A* E* Mittnacht# Ethyl Gasoline Gorp.# 155 is. 42nd street Hew York* H* Y.

IN T E R -O F F IC E CORRESPONDENCE Et h y l Ga s o l i n e Co r po r a t i o n Pf ,,J''--- ..

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1936 - WILMINGTON ACTIfE F I L E .

^appletseat to I n t e n t Koport o f March 23 1981 The field investigation,, ss described in the Interim ftsnort, was carried out an planned except that the period of time was extended to sixteen oaths instead of twelve, primarily for reasons of convenience in the completion of the second aeries of clinical examinations, `on this account there were five rounds of sampling of the urine, instead of the intended four, and the final samples of blood were obtained for comparison with the initial samples after an interval of approximately fifteen oaths instead of twelve.

The determination of soluble lead in insulating wool b y the British Solubility Test.

November 15, 1960 Mr.

BOSTON . . .