William J. Joslin

W. F. Almon

Almon worked at the 100 D Area at Hanford during the Manhattan Project.

Secundino Roybal

Secundino Roybal was a staff worker at Los Alamos during the Manhattan Project.

Arvid P. Johnson

Alan U. Seybolt

Alan Upson Seybolt was a metallurgist who worked at Los Alamos during the Manhattan Project. Seybolt married Dorothea “Dot” Hoover Seybolt, and the couple had two sons.