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TEST BAKER CINDERELLA SHIP. In a caisson 

 slung at a predetermined depth below this LSM- 

 60 is the atomic bomb used in Test Baker, which 

 occurred at 0835 on the morning of July 25 by 

 the Bikini calendar (July 24 in New York). Test 

 Baker was the under water shot, designed to de- 

 termine the effects of an underwater atomic bomb 

 explosion upon ships, particularly ship hulls. Use 

 of a surface vessel from which to suspend the 

 bomb made possible a detonation at exactly the 

 predetermined depth and at the exact center of 

 the target array; all errors in positioning the bomb 

 were avoided. Shown here is the antenna used to 

 receive the radio signal which detonated the 

 bomb. The midship hoist used for lowering the 

 bomb caisson is also shown. OPPOSITE. UPPER. 

 Scientist being checked into the well-guarded tim- 

 ing laboratory aboard the AV- 1 7 "Cumberland 

 Sound." LOWER. Dr. Marshall G. Holloway, 

 Head of the Los Alamos Laboratory group at 

 Bikini, throws the final electronic control switch 

 on apparatus which a few seconds later detonated 

 the Test Baker bomb. Signals controlled from this 

 panel started automatic cameras and instruments 

 a few seconds prior to the detonation. 



