62 4 oat 2 LU . ZE as you can see the concentration successively decreased to well below tolerance towards the end of a period, This goes from 1948 to 1953. With this date we were able to dew eigen a rolling mill and on the basis of the information that we got in this plant, we saved about a million dollars on the control equipment for the new rolling mi11 which ie in the Fernald plant. ¢ I think there 4s one more slide. I'm sorry, but the clide ie not up to our usual technical proficiency. This merely will demonstrate another way in which the data that we collect are effective, were we hay? plotted the observed uranium in bone, These were actual ssmples from people who died or from whom pieces of bone were taken and plotted against this is a predicted amount of uranium in the bone and this prediction is baced on the air sampe ling data that we gain during successive sure veys, and apply by knowing the operation that the man was involved in, applied to the ine dividuals and the correlation is surprisingly