Data on the Sr program accrued since HASL-65 are presented. Levels of S/ sup 90/ in fallout, air, water, milk, vegetation, foods, animal and human bone are given, based on data available from May 21 to September 1, 1959. In addition, the effect of milling on Sr/sup 90/ levels in wheat are shown in a material balance study. An included bibliography of recent literature lists material. related to fallout and the Sr program. An appendix is included which comprises cesium and potassium measurements on humans and milk. (auth)