Order number page 33 940406-171827-13 set 5 with 102 oOFFICIAL -USE ONLY comparisons with CROSSROADS Baker are made. It is estimated that between 100,000 and 130,000ttons of water in the Baker column contributed to the surge, that the column height was between 3500 and 4000 feet, and that the column density was between 1.4 and 1.6 times that of 801. Item 150. 110. 70. 710. KEYWORD(S) ‘ air. 7 references. BASE SURGE/model studies ;UNDERWATER ‘ EXPLOSIONS/base surge ;BAKER BURST/base surge ; SIMULATION; SCALING LAWS 58 REPORT NUMBER NRDL-TR--178 PRIMARY TITLE (M) PERSONAL AUTHOR(M) CORPORATE SOURCE (USA) DATE (YYMMDD) Field beta-gamma dose-rate meter Devlin, F.A. Naval Radiological Defense Lab., San Francisco, CA 371. PUB. 570500 34. CLASSIF. LEVEL TEXT Unclassified 950. ABSTRACT A thin polyethylene chamber ionization detector has shown remarkable beta flux sensitivity. It was found that by adding a removable beta flux discriminator to the chamber it was practicable to differentiate between the beta component and the gamma component of the flux coming from a contaminated field. Laboratory experiments and field data substantiate the practicability of the system described. The gamma energy dependence of the detector was found to be a maximum of 17% high relative 801. KEYWORD(5S) to Co{sup 60}. IONIZATION CHAMBERS/beta detection ; IONIZATION CHAMBERS/gamma detection ;POLYETHYLENES;BETA PARTICLES; GAMMA RADIATION; REDWING; DESIGN; PERFORMANCE 59 Item 150. 110. REPORT NUMBER PRIMARY TITLE (M) LA--1126 Thermal effects of atomic bomb explosions on soils at Trinity and Eniwetok 70. PERSONAL AUTHOR (M) Staritzky, E. 710. CORPORATE SOURCE Los Alamos Scientific Lab., NM (USA) 371. PUB. DATE (YYMMDD) 500613 34. CLASSIF. LEVEL TEXT Unclassified 950. ABSTRACT Samples of soils from Trinity and Eniwetok, thermally alitered as a result of the test Shots of 1945 and 1948, were examined. At Trinity a crust of vescicular silicate glass covers the ground over an area of about 2000 feet diameter. The amount of glass formed is estimated as 17 x 10{sup 8} grams. Petrographic evidence indicated that temperatures exceeding 1470{sup Q0}C were reached throughout this area. Spectrographic 5003601 OFF|GIAL USE ONLY