Abstract

Within 24 to 36 hr after detonation on July 6 and 24 in the Nevada testing area of 2 thermonuclear bombs of the order of 10 kiloton magnitude, the I/ sup 131/ levels of milk from several Utah milk sheds repeatedly exceeded hazardous levels. These findings, reflected in daily I/sup 131/ counts, led the Director of Public Health in Utah to have milk diverted from fluid distribution to milk-products manufacture, thereby permitting time for these dairy foods to become safe for consumer use. In other cities sudden peak levels have also occurred. Thus, Troy, New York, in April, 1953, was exposed by a flash rainstorm, which occurred 18 hr after a Nevada test explosion, to radioactive fallout sufficient to produce levels in milk estimated at more than a 1000 times the safe limit by British or American standards, more than 4 times the British annual allowance in 1 quart of milk. It is suggested that public-health authorities, working in coliaboration with the nation's medical centers, should institute routine, daily I/sup 131/ thyroid-uptake counts on the infants in various parts of the country. (H.H.D.)

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