A. T. Lobel

R. C. Knott

H. V. Appen

H. V. Appen worked for the J.A. Jones Construction Company.

Gilbert Plass

Gilbert Plass was a Canadian physicist. Plass was born in 1922 in Toronto. He received a B.S. in physics from Harvard University before being hired to work on the Manhattan Project at the Chicago Met Lab, where he worked as an associate physicist.

J. C. Ledbetter

Ledbetter worked in the 200 East Area at Hanford during the Manhattan Project.