The variation of exposure in each instrument set wes Gue primarily to the land-water geometry. Since the station still shields the instruments frou 47) refietion, the results obtained 14 not @irectly yield the eer rection factor. ‘Therefore, attenuation factors were calculated based on station construction assuming 700 key as the effective energy of the residual gaxme radiation (Table 2.7). These are consistent with experimental results. Figures 2.7 through 2.11 show the energy response of Dupont Emilsions 902, 510, ani 606 in NBS holders, and of quarts-fiber dosineters and the AN/YDR-39 relative to Co, since the response of the quarts-fiber desi+ meter has been found to be most desirable Guring previous operations (Reference 4), experimental factors have been evaluated to ailjust the fin readings to quartz-fiber equivalence. These factors are 1.15 for film tn aluminum centainers and 1.25 for film in 8-inch steel- pipe stations (Table 2.7). The factors in Table 2.7 are considered accurate to within 20 percent because of variations in thickness of blast shielding. Residual exposure data that appear in the individual shot reports are wmeorrected. The correction factors are used enly in computing inforuagion included in Figures 3.4 ghrough 3.7. 2.4 SUPPORT FACILITIES SP. LOU 2 Fae fhe following projects were furnished NBS photographic dosimeters in the quantities listed: Project 2.2, 100; Project 2.63, 300; Project 2.65, 150; Project 2.66, 150; end Project 2.72, 30. Small quantities were also used by Projects 2,51, 4.1, anf TU 7. ‘These dosimeters vere