Vernon R. Cordell

M. E. Gregson

M. E. Gregson worked for the Roane-Anderson Company.

Arnold “Ace” Grubbe

Arnold Grubbe (1904-2002) was an engineer working for the civilian contractor Crane Company in Oak Ridge, Tennessee.

M. R. Hoff

Hoff worked at the 300 Area at Hanford during the Manhattan Project.

Herman R. Lichtman