SOUTH GLENS FALLS, N.Y. (August 13, 2014) About 180 Civil War-era cannonballs that were found on the grounds of the nation's oldest arsenal have been detonated in an upstate New York quarry.
The cannonballs were found on the grounds of the Watervliet Arsenal, on the Hudson River just north of Albany, Army 1st Sgt. Kieran Dollard of the Fort Drum-based 725th Explosive Ordinance Disposal Unit said.
The explosives were moved 40 miles north to a quarry in South Glens Falls, where they were detonated Tuesday.
Dollard says the cannonballs may have had some black powder residue inside, so they had to be destroyed.
A spokesman for the U.S. Army arsenal says the cannonballs were found on the grounds during construction projects over the years and stored in the facility's museum, which closed last fall.