vessels. In such case we would like to know particularly the diffu- 

 sion rates for radioactivity. 



Since the operating devices may be destroyed at the surface, 

 or at some depth in the ocean, they could remain a hazard until 

 the toxic substances have been diluted in the marine environ- 

 ment to an extent that they are no longer harmful, or they may 

 remain as a point source hazard for long periods of time. 



We are interested in the rates of diffusion at the surface of 

 the ocean and the rates of diffusion at depths in the ocean. 

 As some of you know, the dye, rhodamine-B, has been developed 

 recently, ajid other rhodamines as well, to where it is possible 

 to study very minute quantities of these dyes. We plan to do 

 some initial experiments with dyes. Rather soon, we hope to 

 be able to try large-scale experiments with loss of radioactivity 

 in the ocean. 



Some people contend that the only practical way to put a 

 man on the moon is to use nuclear -propelled space vehicles. 

 Almost everyone is certain that even if ordinary propulsion is 

 used, various types of nuclear -powered devices will be aboard 

 these vehicles. 



All these will have to be tested and various concepts, var- 

 ious instruments, and various techniques will have to be develop- 

 ed in order to insure that their operation meets the very high 

 standards of safety which have been set and accepted by the 

 Commission in past operations. 



One other thing, although the economics of ocean disposal 

 of radioactive wastes are such as to preclude any great increase 

 in disposal of radioactivity in the ocean, we are very much 

 concerned with continuing programs that may make it possible 

 to determine the distribution of waste products that may be dispos- 

 ed in the ocean at some future date. 



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