Secret BRL-MR~775-RD— JUN 16 BRL-MR-775-RD Ballistifs Research Labs. TNT equivalent of nuclear explosions effective in crater formation, Ballistic Research Labs, : Crater Formation. 2. Jangle U Burst— - 5, Surface Explosions— Crater Formation 4. Surfaé® Bursts-— Crater Formation Crater Bermation WD-Farily f Soerct 15206 Report of the Comnandar, Tadk Group 132.1 on Operaticn Ivy. Part II =~ Summary of experinental oint Task Force 132 o Ivye="Alpha" Measurement R» Ivy--Diagnostic 17 pp Exnerinants. B. IvyeeEffects ; ixperinents « Ivy--Blast e IvyeThermal (Cont*d on card 7?) { Ly teme es Joint Task Force 132 J-15206 4 weep ew ote, Crater Formation progranse Ne de | 1. Jangle S Burst— - 12p. T=-15206 t “(: i Perkins, B Jr. B. Perkins, Jr, April, 1954 1994 Radiation WD-Famiiy Secret vy-~Transit Time Bingsot AT: Vaiaait Lae : Hensurenend ng Burst =-Diagnosti Experiments fing Burst ~-Diagnost Experiments ween King Burst-- Blast King Burst --Thernal (cont'd on card 3) 12. Radiation King dursteeTransit Tine like Burst=="i1pind!.Meusurenaent /éo

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