3 rH oO 4 bp oO ct Oo ba ct b> ps at 6b iv ka P _ D It dL 0 Dp ty @ Ur ct n it Be “n Cc On i om tJ we vn 5 oO pf ry ) 1S mere satistacvory.* When eltner To7m is used ror tne extrapolation of TNT date «> megaton nuclear explosions, a certain range of uncertainty in R .s shown, resulting from reasonable values assumed for the uncertainty .s fi 4.) and r(m). Tae uncertainty in R snown by the suggested equat.on 1) 13 smaiier tnan “iat snown cy the equation Porm » OY tnis report, used in tne main uo Anotner and ucre important ceneri: adduced for tne suggested form is tnat tne ovel ote: crater rad.: Yor megator explosions nave a smaller spread when ..1. .naracteristics are :ianged. It iS tice of colon oF tne autin r * aw une oenefits incicated are illusory and “sai tne form usec .1 tue main oody nas a slightly better basis. Tse ‘me .@.ue Of crater -Ac.us produced oy @ megaton explosion in any medtun cther than tnat ex.sving .n tne Marshall Islands will remain unknown 0%). sucn a snot is “iret and tne resulting crater measured. In tic meantime, ted values an. o8i: tnan over-opt.m.en. it is fe.* *7a° uncertainties . caution in stating the expec- eaotly greater military use * One piece ci uwtformation whicn 145 oren put forward as favoring the suggested form .{ #guation is tne es. * of some cratering experiments in the Marsnali Jiiands. Trese experiments were of Dr. EH. Karey wteons Foundation. 1954, «iit.o2 "lL. A cer.e¢, : gurrent.; oo uf .WPEF ¢ $24 \ (754.2) dated 26 Nov. .S ow ere fired on Zlugelab ei (Flora) ig: explosi.e Pp Island, Eniweto. 4ts.l in tne springs cf a compinet.c:. run under tne direction une staff of tne National Science yor. These shots consisted 2 .-°-HDA(t-21F- -b > Tetrytal), primaccrd, and blast- ing caps bile. oro 1e8enlve Ssrape m SurTace wnicen had Leen excavated down t. tne wien tite leve. » was estaclisned around the cnarge tO prevent wave snterferenc. °. tn.s proved ineffective. In addition to ei. eOoCrn Laformeat oo; ‘re crater radii were determined. Tne crater deta co ta.nea Yrom toeoe Grounds may cs user t. establis. = coral witn Nevaca so... m GAMMA. Sue le wD W(tons TNT 29...a on TB Sb onet. at tne Pacific Proving 5 . tactor fo- comparing saturated Oo. ‘' se sta is as follows: == .a a Trater Radius QR. o- Tt. c 3! R./wi/3 | | | | poe, ; . 2 y Ly a oy eee oT. 32 218 1.49 | | ass 1.47 ‘ ates _ . 3 : AV@ragge: .t vera. average First snot omitted | 1.39 1.47 1.00 1ek6.