292 Madison Avenue New York, N.

March 15, 1973 oo r\pc Mr.

fc0teacNTTdustries Association, Inc

, IflTBRNAflONAL LEAD ZINC RESEARCH ORGANIZATION, INC.

PRESIDENT J AY M.

96 h 60( October' 19,: 1970' MRS.

3-5IS7 We invite your reactions to any article in Patient Care Lead toxicity: Chelate at what level?

A REPORT OF RECENT HELICAL STUDIES OF FIVE U.S.

FOR COMPANY USE ONLY P*0GKSS YRM o a t u August 6, 1974 TEST AUTHORIZATION NO.

Traditionally, air sampling and analyses have been used to determine a worker's exposure to various airborne contaminants.

Location of Primary Sampling Units {f "007T*\ A UV.; VfiA vLwxv fuerilw*****+11X>jr by pair of caravans: NHANES II, 1976-1980 Pair Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 IS 16 17 18 19 20 21 22 Caravan Set #1 Miami, Florida Shreveport, Louisiana Newport News, Virginia Dexter, Missouri Des Moines, Iowa Farmington, Minnesota Waukegan, Illinois Greenville, New Bern, N.C.

Wilmington, Delaware April 7, 1972 R.

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