INSTRUCTIONS FOR THE COLLECTION OF SAMPLES OF FECES FOR LEAD ANALYSIS The chemically clean jar supplied for the col lection of feces must be kept and opened in a place which is clean and free of dust.

January 3.6* 19*10 Colonel Vollenweider Oberfeldarzt* S e m Switzerland Dear Colonel YollenwelAer} > I have received a oonasunl*** cation from Hr, F, K-, 3, Tagner of the Associated isthyl Company Ltd,# giving me briefly the results of hie con versation with you concerning the ical supervision of sen who will he engaged- by the Swiss A m y to mix ftthyl m i d with gasoline for aeronautical purposes It Is my purpose to- supplement* so far as possible* the information which Mr, Tegner gave'you concerning this work.

N18411 International Lead Zinc Research Orgnztn.

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The H ygienic Problem o f the E th y l G asolin e Corporation 1,110 c o n tr o l o f th e d ir e c t I n d u s tr ia l hazards l i s t e d in the order o f t h e ir ismoMaue 'importance in tern s o f (a) the occurrence o f case a of p oison in g and (b) tha a x i s t nc o f p o t e n t ia l dangers which are n o t under co n tro l 1 Hazards in clea n in g sto ra g e tanka u sed fo r n ix in g lead ed gasolin e a t n ixin g p o in ts.

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November 6, 19^0 Mr.

V General Asterioan, Storage Terminals Baton Rouge Atlanta December 11 iSNMt*.

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