Nuclear Museum Logo
Nuclear Museum Logo

National Museum of Nuclear Science & History

Leonard Switalski

First Ordnance SquadronTinian Island

Los Alamos, NMWendover, UT
509th Composite GroupManhattan Project VeteranMilitary Veteran
North Airfield at Tinian Island.

Leonard Switalski served in the First Ordnance Squadron.

Related Profiles

W. A. Briggs

B Reactor/100 Area

Briggs worked at the 100-D Area at Hanford during the Manhattan Project. 

Milton C. Matthews

Los Alamos, NM

Milton Matthews worked for the Tennessee Eastman Corporation at the Y-12 Plant.

Rosario Martinez Fiorillo

Los Alamos, NM

Rosario Martinez Fiorillo grew up in northern New Mexico during the Manhattan Project. Her ancestors were Hispano homesteaders who built the Romero Cabin, an important pre-Manhattan Project structure at Los Alamos.

John Attanas

T-Plant/200 Areas

John Attanas was born in 1920 and grew up on farm near Kingston, New York. After graduating from Georgia Tech in 1942 with a degree in chemical engineering, he worked in a chemistry lab at the Remington Arms Company.