Il 3.1 DOSIMETRY AND RECORDS General Upon arrival at EPG each person was issued an addressograph identifi- cation plate and film badge, The identification plate of H&N employees was embossed with an eight digit serial number that designated the individual's task group, task unit, department and payroll number, The identification plate and the film badge were attached to and worn with the security badge. The film badges were exchanged on a bimonthly basis or on return from a mission into a RADEX area. The Dosimetry and Records Section of TU-6, TG 7.1, was responsible for providing the film badges for all personnel during the Operation, The section was also responsible for the processing of film badges and the evaluation and recording of radiation dosages. H&N Rad-Safe personnel assisted TU-6 in the issuing, collecting and processing of film, Dosage records were main- tained for all TG 7.5 personnel with IBM dosage cards, obtained daily from TU-6. 3.2 Procedures During the Operation, the Eberline film badge evaluation and recording system, FS-3, was used for the first time. Two units were installed at Site Elmer and one at Site Nan. When the equipment was operating efficiently, approximately 2000 films could be read and recorded within a few hours, All film badge data at Site Nan was transmitted to the IBM section at Site Elmer by an IBM data transceiver, An IBM 704 was used for storage and dosage print-out rosters. 13