operated and maintained electronic systems for B Division, Health and Safety radiation monitoring, and the Tory II- A and C, and Super Kukla reactor controls; and operated the telemetric system of data transmission. The LRL Electronics Shop at Mercury, Nevada, maintained test equipment and fabricated new special systems such as remopte camera and photo control, Sky Scan (airborne activity) and Vidor systems. The Health and Safety Group of LRL- Nevada Operations sup- ported all weapons tests and Plowshare devices, site emplacement, drilling and sample reading, and monitoring, control, and shipment of radioactive materials originated at the NTS. Hundreds of technical and nontechnical reports describe the Group’s efforts. The Group sought to employ improved methods of radioactive sampling and analysis then available. A gamma spectrometer telemetry facility was installed in 1965 at Mercury for radioactive identification of recovered sample materials. Pacific Proving Ground (PPG) LRL staff participated in the Bikini shots of 1946 and several subsequent tests in the later 1950s up to the moratorium of 1958-1961. The resumption of weapons testing had an important impact on all divisions. In 1962 Dominic involved high altitude rocket drops and air drops at Christmas Island and air drops near Johnston Island. During Dominic, LRL personnel were stationed on Christmas and Johnston islands, as well as Oahu and Kauai in Hawaii. Staff accumulated data on nuclear detonations using diagnostic systems. Studies were also made of long-flight and high altitude weapon explosions for measuring high-energy neutrons.

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