National Museum of Nuclear Science & History
Charles Henrich was a member of the Military Police at Los Alamos and worked as a tech sergeant.
Ben Benjamin was a sergeant in the Special Engineer Detachment during the Manhattan Project. He had previously worked in industry making lenses and prisms, and was assigned to the Optics Group to help with photographing the Trinity Test.
Alllen Junkin worked for the J.A. Jones Construction Company.
Matthew A. Guszak served in the 1395th Miliary Police Company, Aviation.
Sergeant Frank Karcher was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.