Abstract
In a history-rich American city like Pittsburgh, important pieces of our past are often unearthed right in our backyards.A backhoe operator excavating the site of Pittsburgh's Allegheny Arsenal recently uneathered hundreds of Civil War-era cannonballs. The contractor alerted the bomb squad and precautions were taken to keep Lawrenceville residents near 39th and Foster streets safe from the 150-year-old artillery projectiles.
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