86 oe hag to do for the Industrial Hygiene Service and the numbers of samples that are involved. MR. I.B. WHITNEY: The analytical problem consists of three major groups of gamples, one which we do for the Industrial Hygiene - these sare the bioeagsay samples which concern uranium in uranium air dust and soil or whatever it may happen to be that they go out and get samples for; also small quantities of beryllium in air dust or urine, radium periodically, rafion in breath samples, thorium in urine or sometimes in soil semples, fluoride sulphates in air dust, I think we have done a few and also e011 samples for background data at various plants about to be started, We also have a sunshine program for which we mak2 “serfium", strontium, some iodine, barium and various other chemical analyses. We have had a program which has followed very much the same type of radio=- chemical analysis including a few others such ag zine and rutheniun, We had an fodine program during the early part of the year,