CURTAIN RAISER. These clouds of spray thrown 

 up by the dynamite charges used to remove coral 

 heads from the lagoon floor are but a microscopic 

 suggestion of the titanic blast plumes heaved aloft 

 by the second of the two atomic bomb explosions. 

 The tempest in a teacup shown here was necessary 



to aid navigation in the lagoon, to facilitate uni- 

 form mooring of target vessels, and to permit ac- 

 curate study of the spread of underwater shock 

 waves produced by the bombs. Some were re- 

 moved to permit the larger landing craft access 

 to the island beaches. 



