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New US sonar tech to hunt hidden WWII-era bombs buried at 400+ underwater sitesMore than 400 underwater sites across the U.S. may be contaminated with unexploded ordnance (UXO)—decades-old bombs and ...
More than 400 underwater sites in the United States are potentially contaminated with unexploded ordnance (UXO)—weapons that did not explode upon deployment, which continues to pose a safety concern.
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