in HRL Building. A number of old systems have been checked and, where neces- sary, improvements have been recommended, These include Building 202 at S Site, Building 410 at S Site, the Laboratory Building at TA-9, the Glass Shop, and Building 34 at TD Site. I, OperationTeapot Members of the Test Operations Section participated in a l0-day training course for off-site monitors at the Nevada Proving Ground under the auspices of the U. Ss, Public Health Service. The Section provided equipment, training material, and instruction during part of the course. Operational procedures for Teapot have been reviewed and discussed with the individuals responsible for carrying them out. More detailed discussions on equipment were carried on . . aad at Los Alamos during a visit of a representative of the Offysite Group. ° / J, Respirator Prorram Classification changed to by autho f, the U.S. s - . DA. > - ro During this period, an edfiea, (Person a respirators entitled "The Air We Freathe” w. all members of Groups H~l and H-5. tt vas‘a1so Bhown TeteVisSafetyengineer to approximately 65 of their supervisors and the Fire Department showed the film at each of the various fire stations. At all-except the fire stations, & representative of H-5 was present to give further details and answer questions on respirators. -The SP-3 catalogue of safety equipment has been revised by Group H-5 and the revisions were accepted by SP~3 for inclusion in future catalogues. The new revision will list all respirators and masks with the filter cartridge or cannister to be used listed with the appropriate unit. A similar list will be used by H-5 to give approval by telephone on respirators being checked out from stock. In this way it will be possible to recommend respirators by cata- logue number and eliminate previous confusion in the issuance of the proper coried/00 PANE RC esequipment. \ | os : | 2x