Treadwell worked at the 100-B and 100-D Areas at Hanford during the Manhattan Project.
D. R. Treadwell
Project StaffB Reactor/100 Area
Hanford, WA
Manhattan Project VeteranProject Worker/Staff
![The first large-scale nuclear reactor in history, the B-Reactor, in Hanford, Washington](https://ahf.nuclearmuseum.org/wp-content/uploads/2014/11/B Reactor w flag_5-1024x768.jpg)
Treadwell worked at the 100-B and 100-D Areas at Hanford during the Manhattan Project.