National Museum of Nuclear Science & History
Alexander worked at the 100 D Area at Hanford during the Manhattan Project.
R. F. Conkling worked for the J.A. Jones Construction Company.
Ernest Wende was transferred into the Manhattan District, the branch of the United States Army Corps of Engineers tasked with overseeing the construction of critical Manhattan Project sites, shortly after its formation in 1942.
Tompkins worked for Stone and Webster Engineering Corporation.