C. S. A. Leadworks and mapping mistakes

Some of the lead expended by the Confederate forces at Petersburg was likely smelted at the leadworks constructed in 1862 on the southwest edge of town.This important facility was originally outside the city's defenses, but at some point new earthworks were built to protect it Strangely, a Confederate map of the Petersburg region compiled in summer 1864 misplaces the leadworks.
New: Confederate Leadworks