C = ne C V, GROUP H-5, INDUSTRIAL HYGIENE (H, F, Schulte) A,__Bervllium The Beryllium Shop operated six days during this period. A total of 31 air samples were collected and all concentrations were below the permis~ sible level. . One member of the Field Section made a two-week health survey of the T-315 test at the Yuma Ordnance Test Area. A total of 8 air samples and 6 swipe samples were taken and a report will be written in the near future. Since reasonable precautions were taken during the operation, it seems probable that no hazardous exposures were encountered. The extensive literature review on the beryllium problem is continuing. ~ Conferences have also been held with representatives of CMR and GMX Divisions to make arrangements for running specified tests on beryllium compounds. seems probably that most of the test requirements can be performed at, B Classification changed to by author ZL: "eee. ani og tion is being It Los Alagoas. fz C2. atg) “SS 7E collected, Of py _breatting zone Samples (Signature of person making tho chango, and date) 10 have been over permissible limits while 6 general air samples were below these limits. followed closely. During rolling, drawing, and inspection of oralloy enriched with 233, 23 out of 28 breathing zone samples were over permissible limits while none of the 16 general air samples were above limits. A report is being preparedcontaining detailed recommendations for handling this material. This enriched oralloy has caused far greater surface contamination in Room 118 than had ever been encountered previously. The operators wore respirators during all operations and 24-hour urine samples were collected. the new extraction method. These will be analyzed by This method which has been developed recently by the Laboratory Section involves extraction with dibutyl phosphate and subsequent platCte abfA UF ing and counting of the uranium. ety The results obtained, to date, are much more ru 4 Da y