World War II Secret Mustard Gas Testing An NPR investigation found the VA failed to keep its promise of benefits to thousands of exposed veterans. And revealed previously unknown U.S. military tests that singled out the men by race.

Members of the U.S. military who were exposed to mustard gas in secret experiments during World War II (from left): Harry Maxson, Louis Bessho, Rollins Edwards, Paul Goldman and Sidney Wolfson. Courtesy of the families hide caption

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Courtesy of the families

Richard Mintz and his family. Courtesy of Nan Moore hide caption

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Courtesy of Nan Moore

Families React To NPR's Reporting Of Secret Mustard Gas Testing

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Lawmakers Promise To Take Action After NPR's Mustard Gas Exposure Report

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Alan Oates was exposed to herbicides, such as Agent Orange, while serving in Vietnam in 1968. Decades after returning home, he was diagnosed with Parkinson's disease, and because Congress passed the Agent Orange Act, he's able to receive VA benefits. Courtesy of Alan Oates hide caption

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Can The Agent Orange Act Help Veterans Exposed To Mustard Gas?

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In this 1945 image, test subjects enter a gas chamber for a U.S. military experiment that will expose them to mustard gas. Courtesy of Edgewood Arsenal hide caption

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Courtesy of Edgewood Arsenal

Members of the U.S. military who were exposed to mustard gas in secret experiments during World War II (from left): Harry Maxson, Louis Bessho, Rollins Edwards, Paul Goldman and Sidney Wolfson. Courtesy of the families hide caption

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Courtesy of the families