The Manhattan and Elsie Projects 



101 



Large concrete targets used in the Elsie Project at Dahlgren. 





^Sft-rA*-'™ ■!> *- 



Side view of test butt used to catch Elsie projectiles. 



Everybody was curious about the building, but you had to have a special 

 clearance to enter. 



Security must have been a big problem. 



Security wasn't too much of a problem because people were pretty well 

 impressed with the need for security. When we got the Q-clearance, which is 

 what it was called, we were given a stern lecture about what would happen if we 

 violated security. So far as I know, there was never a security violation of any 

 type at Dahlgren during this time. 



