Acknowl edgements 



We could not have proceeded so far in the present project 

 without the support and cooperation of Mr. Philip Stohr, 

 of NRC, whose help it is a pleasure to acknowledge. The 

 work at Millstone Point was facilitated by assistance from 

 Dr. William Renfro and Dr. Ralph Briscoe; that at Maine 

 Yankee was comparably helped by Dr. David Sturniolo , Jr . of 

 Maine Yankee and Professor C. T. Hess of Univ. of Maine. 

 The collecting by, and analysis of samples at, WHOI were 

 carried out by a number of colleagues, among whom special 

 mention should be made of H. D. Livingston, J. C. Burke, 

 D. R. Mann, A. G. Gordon, L. B. Graham and W. R. Clarke. 

 All of this help is gratefully acknowledged. 



Substantial amounts of data, reported here as essential to 

 the understanding of this program, were obtained as parts 

 of other projects, most prominently that funded by the 

 Dept. of Energy under contract DE-AC02-76-EV-03563 . A005 

 and by the Environmental Protection Agency as part of the 

 Mussel Watch Program under contract with the University of 

 California; we are grateful for this support and for the 

 freedom with which these data can be used. 



IX 



