Umberto Nobile died on July 30, 1978, in Rome, Lazio, Italy.
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Umberto Nobile was a designer of air ships and worked in the
Soviet Union, the United States and in Italy. He was never lost. He
died in Rome on July 30, 1978.
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i am not sure but he did die in a plane crash attempting to
rescue his friend Italian explorer umberto nobile