10-Inch Siege Mortar, Pattern 1840, at Vicksburg
US Army 10-Inch Siege Mortar, Pattern 1840
US Army 10-Inch Siege Mortar, Pattern 1840, displayed on "Cannon Row" at Vicksburg National Military Park - this mortar was cast in 1859 at West Point Foundry. As manufactured it weighed 1,812 pounds.
The National Park’s page on South Fort notes that a 10-Inch Mortar was used by the Confederates to wreak havoc on Union lines.