A centuries-old cannon has been discovered in southern Arizona – and officials say it’s the oldest firearm unearthed in the continental U.S. The 40-pound bronze cannon, or wall gun, is believed to ...

A bronze cannon recently recovered by researchers in Arizona appears to be the oldest known firearm ever found in the continental United States. According to experts, analysis indicates the 40 lbs ...

Researchers have uncovered what they believe to be the "oldest firearm" ever found in the continental United States. This valuable artifact, a bronze cannon or "wall gun," was recovered from a site ...

The discovery’s highlight was a 247-pound cannon from the Ming dynasty, but archaeologists also found remains of crops and turquoise pieces.

A 40-pound bronze cannon, or wall gun, believed to have been part of the Francisco Vázquez de Coronado expedition has been discovered in southern Arizona. Photo from Deni J. Seymour A centuries-old ...