Nuclear Museum Logo
Nuclear Museum Logo

National Museum of Nuclear Science & History

Nancy Greenewalt Frederick is the oldest daughter of Crawford Greenewalt, a chemical engineer who worked on the Manhattan Project and later become president of the DuPont Company. 

Related Profiles

Elberta Lowdermilk Honstein

Los Alamos, NM

Elberta Honstein (née Lowdermilk) was the daughter of Elbert Lowdermilk, the contractor whose construction company, Lowdermilk Brothers, built roads and utility lines around Los Alamos during the Manhattan Project.

Ernest Tremmel

Washington, DC

Ernest (Ernie) Tremmel was born on September 20, 1916 in Wisconsin. He graduated from the University of Wisconsin-Madison with a B.

Dorothy Vanderford

Los Alamos, NM

Dorothy Vanderford (1973- ) is the granddaughter of J. Robert Oppenheimer. Although Vanderford never met her grandfather, she knows the family narrative well and her father, Peter Oppenheimer, was a child during the Oppenheimer trial.

Patricia Postma

Oak Ridge, TN

Patricia “Pat” Postma came to Oak Ridge, Tennessee as a kindergartner after her father, Thomas Dunigan, was recruited from the Army Signal Corps to join the Manhattan Project.