While I was a student at Gettysburg College from 87-91, there were a few instances where locals were having renovations done to their property otlr a utility company was digging and theyd find a crate of amputated limbs or other artifacts.
In certain Chicago neighborhoods home builders run across mass graves from the multiple cholera and typhoid epidemics.
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The entire city limits of Corinth, Mississippi, are a burial ground of unmarked graves. Soldiers were buried everywhere prior to the Battle of Shiloh, after the Battle of Shiloh, the Siege of Corinth, and the Battle of Corinth. The NPS estimates there are as few as 2,500 unmarked buried to over 6000 unmarked graves in the area. Many have been found and the NPS is mum about the location because relic hunters desire the brass accouterments that accompany the dead. Corinth was the location of the largest siege and battle in Mississippi and estimated that 3 out of every 5 soldiers during the Civil War were at Corinth at one time or another. It was the rail site where two major railroads crossed. New Orleans and Florida were abandoned by the Confederacy to save Corinth.