One of the most significant monuments is that to Major General John E. Wool. The 75.5-foot (23.0 m) monolithic obelisk which was a technological marvel in its day is constructed from granite quarried and shaped by the Bodwell Granite Company of Vinalhaven, Maine, and at 650 tons was believed to be the largest shaft quarried in the United States up to that time.[26] It was transported to Troy by boat and brought to the cemetery on rollers.