An unexploded artillery shell was discovered at Gettysburg National Military Park.
Unexploded artillery shell unearthed at Gettysburg. It may have been a case of friendly fire
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Photo of the day: The shell got stuck in a tree and didn't explode
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Unexploded shell found on the Gettysburg battlefield today.
Civil War-era artillery shell found at Gettysburg
Battle relic found at bottom of river