to depict the scope of the project's effort and to show significant results of their efforttaphistorical and report purposes. Still photography for illus- trating preliminary and final reports was conducted by TG 7.1, TU-1. tigh Mo- picture coverage to be used in the production of a weapon effects film “4 provided by JTF 7. Technical photography, such as high-speed, timelapse, and function-of-time photography, was furnished by TU-5 (EG&G). During the planning phase of Operation Hardtack, it became evident that the needs of thé “various projects for photographically collected data would fall on the five military effects events: two high altitude rocket detonations, one high altitude balloon detonation, and two underwater detonations. Because of the varied nature and location of the detonations, more extensive and sophisticated camera installations were needed than on any prior operation. As the test series proceeded, additional shots of military interest were added, which further increased the complexity and number of camera stations. For the high altitude balloon detonation, RB-36's were used with back- up camera installation mounted on the USS Boxer. For the Teak and Orange shots, the RB-36's were used with backup surface and ground stations. The photographic equipment used for all three high altitude detonations consisted of streak, high and medium speed motion picture, rapid sequencestill, and Zenith cameras, utilizing both color and black and white film. The photographic instrumentation for the two underwater shots was basically the same for each shot. The stations common to both shots consisted of a camera station on Parry Island, and one on Igurin Island: an LCU camera station anchored in the lagoon; an RB-50 aircraft directly over surface zero at 25,000 ft altitude; three C-54 aircraft orbiting at 20,000 ft range at altitudes of 1500 ft, 9000 ft, and 10,000 ft; and one RB~50 aircraft which provided vertical aerial photographic coverage of the target array before and after each shot. For the Wahoo shot, an additional camera station was installed in the hold of the EC-2 to record effects of a deep-water detonation on the ship's structure. . For the Umbrella shot, in addition to the basic installations, a camera station was installed on a barge 20,000 ft from surface zero; another camera station was installed on Mui Island to photograph rocket firings. and a trimetrogon camera array wasinstalled on an H-19 helicopter to photograph wave action at two surface instrument platforms. In addition to the major portion of the photographic effort on the five military effects shots, a somewhat smaller effort was expended on some of the AEC diagnostic shots. A camera station was installed to record the effects of the thermal pulse on certain materials. Several aerial photographic surveys were accomplished of craters produced by land surface detonations; aerial surveys were accomplished to locate strings of gages placed in the water prior to several shots; and aerial mosaics were photographed of Johnston Island and all the islands of Bikini and Eniwetok Atolls for planning purposes. Before the five original military effects shots had all been detonated, two additional shots of DOD interest were added to the program: surface bursts on the island of Yvonne at Eniwetok Atoli. This necessitated the establishment of two camera stations to cover the events and the addition of some still and motion picture documentary coverage. In all, about 66,000 ft of original 35-mm Eastman color negative film was exposed from which a military effects motion picture film report will be 36