Show A lot of boom at dugway dug proving grounds I 1 5 4 4 aw W 1 POP experimental explosions with TNT resulted in the huge clouds of smoke in the photos above and left last week as the army tested underground structures ft picture no I 1 shows part of the large crowd of newsreel radio ta PAO 0 and newspapermen number 2 A m 01 shows the first explosion ibs lbs 4 of TNT just after the blast and p t photo number three records the second blow up which was 2560 pounds of TNT just 8 times more than the first photo by W D bush 41 |