The Manhattan Project Heritage Preservation Association, Inc.

"Preserving, Exhibiting, Interpreting and Teaching the History of the Manhattan Project"

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In Memory of...

Peter Newport Bragg Jr.

1920 - 1944


A brilliant chemical engineer, he volunteered for a dangerous assignment while employed by the U. S. Navy Research Laboratory's "pilot-plant" at the Philadelphia Navy Yard.  As part of the super-secret Manhattan Project, it was the Lab's mission to perfect the thermal diffusion process for the enrichment of uranium.  On Sept. 2, 1944, while working to unclog a tube in a complex array of pipes, Peter was killed in a horrific explosion that sent a cloud of radioactive uranium hexafluoride over much of the Navy Yard including the battleship USS Wisconsin, berthed just 200 yards away.  A fellow co-worker, Douglas Meigs, was also killed.  His work was crucial to the development of the first atomic bomb, and in his own way, his contribution helped bring about an early end to World War II.  Although not in uniform, he died in service to his country.

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