RAND SUNSHINE PROJECT Conference December 16, 17, 18, 1953 Santa Monica, California I. INTRODUCTION The conference was convened to consider the experimental da since the study conducted during summer 1953 (RAND Report R-251-. obtained ). Following the report of last summer, the Division of Biology and Medicine let a contract with the University of Chicago for the measurement of a few dozen samples as quickly eas possible in order that the program be properly oriented. Program. This is referred to in the RAND SUNSHINE Report as the Pilot Assay The Chicago group has completed analysis on about 100 5 Their data and some data from other groups are presented in Appe In Appendix A the unit known as the SUNSHINE UNIT is 2.2 dis per mimite of Sr” per gram of calcium. This is 1/1000th of the permissible concentration. his body. A "standard man" has 1000 grams of ca Since the maximm permissible concentration is one mic standard man it follows, since 1 microcurte of sr? is 2.210°6 dpm SUNSHINE UNIT is 1/100Cth of maximum permissible concentration. unit is used for both animals and food. It is, of course, imposs this unit for rein and water and other types of samples which do calcium. In these samples the actual Sr a specific activities ar in disintegrations per minute per gallon in the case of rainwater The costs for the Chicago measurements are interesting in since they indicate the budget likely to be required far PROJECT URCLASSIFIEL 1045302 | AN! us