unit, the 49th Quartermaster Group (Petroleum and Water), is stationed here. Fort Lee also hosts two Army museums, the U.S. Army Quartermaster Museum and the U.S. Army Women's Museum. The fort is named for Confederate General Robert E. Lee. Military personnel make up a significant presence in the tri-cities area. Federal prisons The Tri-cities also is home to a federal prison complex called the Petersburg Federal Correctional Complex. It consists of medium and low security Federal Correctional Institutions known respectively as FCI Petersburg Medium and FCI Petersburg Low. Despite its name, the address of the Petersburg Federal Correctional Complex is actually in Prince George County. In addition, there is United States Probation Office near FCI – Petersburg, in Colonial Heights, Virginia, and the two agencies enjoy a supportive relationship. Industries Puddledock Sand & Gravel, in Prince George County, Virginia is a quarry that has made significant alteration of the landscape along the Appomattox River and State Route 144 (Temple Avenue). The quarry is currently owned by Vulcan Materials Company and quarries natural sand as well as asphalt and concrete aggregates for gravel. Ruffin Mill Industrial Park or Appomattox Industrial Park is located off Ruffin Mill Road exit from I-95 and is . Hopewell also is known for a number of chemical manufacturing plants. Civil War history Many sites in the tri-cities area have names reflecting the region's role in the American Civil War. A major logistics base for the Union Army was located at City Point and the City Point Railroad that enabled the siege of Petersburg is still in operation today. The history of the Battle of the Crater can be viewed in Petersburg National Battlefield Park and is commemorated in nearby 'Crater Road and the Fort Lee entry "Mahone Gate" named after Brigadier General William Mahone, the hero of the Battle of the Crater during the Siege of Petersburg in 1864. Fort Lee itself is named after Confederate Civil War hero Robert E. Lee. References External links Area Map with Google Maps Regions of Virginia Tri-Cities of Virginia Tri-Cities of Virginia Tri-Cities of Virginia Tri-Cities of Virginia Tri-Cities of Virginia Tri-Cities of Virginia Greater Richmond Region Tri-Cities of Virginia