HANNA: DESIGN OF TRANSMISSION LOSS EXPERIMENTS 



One observation, for example, we do most of our propagation 

 studies — not all, but most — with explosives. We have yet, I 

 think I am right, John — we have yet to model a single explosive 

 transmission event; isn't that correct? Don't we always make a CW 

 model and then sort of imagine that the CW model is like the 

 explosive? 



Mr. Spofford: We are doing that. 



Dr. Hersey: We have had this as a dream, I know. 



Mr. Spofford: Of course with the ray models we can put in the 

 shot characteristics. So I would say at the moment we are a little 

 hard-pressed to come up with them exactly; this is the problem. 

 There is a linearity of something we do with shots. 



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4 U. S. GOVERNMENT PRINTING OFFICE : 1977 O - 244-456 



