As previously mentioned, Miss Sullivan was administrative 

 assistant for Section C-4 and later Division 6 until replaced 

 late in the life of the Division by Mr„ J„ P„ Lee, 



Consultants to Section C-4 and Division 6 serving for 

 various periods during the course of the work were : R„ Do Fay, 

 To Co Fry, To Ko Glennan 5 Do G« C, Hare , W V, Houston, F, V. 

 Hunt, V» 0. Khudsen s D« P= Mitchell, H. Nyquist, To Co Poulter, 

 Re So Shankland, H. Wo Sverdrup, Mo So Viteless, E» G„ Wever, 

 So So Wilks, and E» Mo Wiseo 



A Section Committee was formed The group met to consider 

 critically the proposals for research work submitted and to 

 recommend therrij, if satisfactory,, for action by NDRC. Orig- 

 inally the Section Committee consisted of Dr, Tate as chairman, 

 and DrSo Anderson, Colpitts, Coolidgej, Lawrence, Mason, and 

 Pegram„ In August 1941 Messrs „ Foote 9 Morse and Shea were 

 added to the membership 



An important adjunct to the central administrative office 

 was a group of scientists employed under a contract with 

 Columbia University „ This staff, known as the Program Analy- 

 sis Group, carried on a continuous analysis of the work in 

 progress o One of the group's first tasks was to make a sta- 

 tistical analysis of the probable effectiveness of an anti- 

 submarine attacks taking into account s on the basis of proba- 

 bilities, the characteristics of enemy submarines, of our own 

 anti-submarine craft and their detection gear, of the ordnance 

 then being used s and of sound propagation in sea water,, The 

 results of these early studies^ showing that a depth charge 

 attack had in all probability less than a five per cent chance 

 of success j pointed out the necessity for work to be done on 

 the development of anti-submarine ordnance 



As a consequence c, the work of the Program Analysis Group 

 was for a time split into two parts, with Dr„ Slichter heading 

 the continuing statistical work and Dr„ Wo V» Houston taking 

 charge of other analytical studies 



Dr„ Slichter transferred to other work on 31 December 

 1942 and Dr . Houston took over supervision of a group which 

 was once more united and which by then had been entitled the 

 Special Studies Group, The scope of the Group's work expanded 

 and came to include development of torpedoes Particular men- 

 tion should be made of a section of Special Studies designated 

 as the Sonar Analysis Group, which was set up to analyze and 



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