yo & is similar to the initial retistion of wars genre 7 ‘aerioe (meferenee 13) [mae electron equilibriue layer presents a seuree of slectrens that may de t peattered into the emilsion to replace those electrons proiuced Wy game raiiation abeerbed near the surface of the filn and lest without = being detected. In the energy range fren 115 kev to 10 Mev, the dosimeter is considered accurate te within 4 90 percent vith the file types used on this operation (Aeferenees Us anf 15). For Shot Cherokee, film was expesed both with and without EBS holders, to obtain an indication of the presence of lev gamme-qmergy com ponents in initial radiation, since bare films show maximm sensitivity to gamma energies at about 6 ker. ~ Two dental«size file peckets, each containing from one to three =f differené filx emiisions, can be placed in the holder. A lead strip ef 0.76-nm thickness was wrapped around the outer edge of the holder te cover the sean. The holder was placed ta a sealed plastic ean to protect the film from weather while in the field. The primary film packets weed were: Dupont553 containing Emulsions — 502, 510, and 606; emf an Restemn packet containing a syectal microfila (80 1112) and apectroscopic-type 548-6 double-coet fiin. — packets vere individually sealed in polyethylene bags. "fin sfidition, Eastann ~~ epectroscopic-type 548.0 single-coat ms used when very-high exposures a were anticipated. Table ba iists the ranges of the filss, end Figures 2.1, 2.2, and 2.5 show examples of the ealibraGion curves. | 4 (y0- p20 The films were stored in a refrigerator at Site Elmer and withdrawm as needed. Sets pf calibration files were exposed to the co calibration