SLIDE 40 Urine bioassay. Urine samples were collected during bioassay field surveys and during medical surveys. The samples were analyzed during the 1950's and 1960's by both USNRDL and the NYO-AEC Laboratories. ghuring later years the samples were analyzed by BNL for gamma emitters and Sr. During the 1970's and 1980's some samples were analyzed by Battelle Northwest Laboratorigs, Oak Ridge Nggional Laboratory and by Los Alamos National Laboratory for Pu. In 1983, Pu analysis was initiated at BNL and samples collected in 1978 are being analyzedgow. About 2000 urine samples and 200 fecal samples await analysis for Pu 43