http://trineday.com/paypal_store/product_pages/9781634241175-Critical_Mass/index.html

Critical Mass researcher and writer Carter Hydrick in front of beta calutron used during WW II to 

enrich uranium. Photo taken when Mr. Hydrick presented the second time to scientists and technicians at Oak Ridge National Laboratory.  

(photo courtesy Oak Ridge National Laboratory)

D. Ray Smith, Oak Ridge National Laboratory historian, demonstrates calutron operation to Critical Mass researcher and writer Carter Hydrick.

 (photo courtesy Oak Ridge National Laboratory)

Critical Mass presentation at Oak Ridge

Researcher and writer Carter Hydrick discusses an important point while presenting his research to scientists and technicians at Oak Ridge National Laboratory the second time.

(photo courtesy Oak Ridge National Laboratory)

View Oak Ridge presentation