Table 1, Cases of 1-131 730 pCi/l of milk in PHS Pasteurized Milk Network {April 1963 through December 1968) Period (See fig. 1) Period of Milk Contanination ' First Contaminated Milk . 1-131 (pC/1} Highest Contaminated Milk — Milkshed 1-131 Bepin End Milkshed Date {pci/1) 10/26/64 11/2/64 Albuquerque, N.M. 60 Albuquerque, N.M, 10/24/64 60 4/27/65 4/27/65 Helena, Mont, 80 Helena, Mont, 4/27/65 80 Nuclear Cloud Arri y 1 Date from Meteoro ogical Trajectories / 10/20/64 U Probable Source Lop Nor Atmos- pheric test NTS Cratering event 5/25/65 6/22/65 Minneapolis, Minn, 90 Kansas City, Mo. 5/28/65 220 12/1/65 12/1/55 Chattanooga, Tenn. 36 Chattanooga, Tenn, ‘12/1/65 36 5/20/66 6/24/66 Kansas City, Mo. 80 Little Rock, Ark, 5/24/66 392 7/19/66 7/19/66 Palmer, Alaska 60 Palmer, Alaska 7/19/66 60 11/10/65 11/16/66 Kansas City, Mo, 3? Kansas City Mo. Austin, Tex. 11/10/66 11/16/66 37 3? 1/6/67 1/16/67 Portland, Ore, 74 Charlestown, §.C, 1/10/67 1/4/68 1/4/68 Charlotte, N.C. 36 Charlotte, N.C, 1/4/68 8/26/68 8/26/68 Canal Zone, Panama 32 Canal Zone Panama 8/26/68 et, nen “ . 5/19/65 Lop hor pheric Atmostest Unknown 5/13/66 Lop Nor Atmos - pheric test Unknown 11/2/66 Lop Nor Atmospheric test 12/31/66 Lop Kor Atmos-~ pheric test 36 12/28/67 Lop Nor Atmos- 32 Unknown S. Pacific | Atmospherfe test pheric test