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ATOMIC PARI MUTUEL As the exacting prepa- 

 rations for the first atomic test approached com- 

 pletion, and as the date of the first explosion 

 drew near, informal pools were organized as to 

 how many ships would be sunk, or as to the exact 

 time when the bomb would actually be detonated. 

 Seen above, Rear Admiral T. A. Solberg, Director 

 of Ship Material, with N. J. Hotter, project physi- 



cist for wave measurement, watches Major Harold 

 H. Wood, bombardier of "Dave's Dream," the 

 bomb-drop plane, keep the record on a "minute 

 of detonation" pool. Of 60 possible choices, Hol- 

 ter's paid off. OPPOSITE. On Kwajalein an Army 

 Air Forces weather balloon goes aloft. Suspended 

 beneath it can be seen the radiosonde instrument 

 for taking readings of pressure and temperature. 



