THE UNIVERSITY OF BRITISH COLUMBIA VANCOUVER 8, CANADA DEPARTMENT OF GEOLOGY January 2y, 196if.

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I N D U S T R I A L H Y G I E N E F O U N D A T I O N O F A M E R I C A , I N C. 4-4 0 0 F i f t h Av e n u e P i t t s b u r g h 13, Pa .

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have on the overall level of lead In urban air one can examine separately the three possible avenues by which lead from gasoline can reach the air and compare the effects of the two compounds: 1.

;/ U U I T E B S i n OF CltfCINHATI f College of Medicine General Hospital Sden and Bethescia Avenues Laboratory of Applied Physiology Cincinnati, Ohio January 16, 1836 Jtr* Charles Lesley Dunn 608 Fifth Avenue He lark City, Hew York Dear Mr.

5-19-55 C.

- ' Medical Veport oh status of survey of the plant of Lowe Brothers lnc,a Dayton Ohio Lead expo sag's / - ..... -- v ; .

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< o C-> tri C.J ce N 7778 REGULATIONS FOR CLEANING STORAGE TANKS WHICH HAVE CONTAINED ETHYL GASOLINE These Regulation s are to be regarded as the minimum requirements for the avoidance of lead exposure in cleaning tan ks th at h ave been used for storing gasolin e containing ETH YL Fluid.

JO H N A LT O N JO H N ST O N , M.

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