The discovery of gold at Great Falls, Maryland: Mining and milling methods, stories of the mine, why the mines shut down By Ingalls, Edgar T Books / Other Science, Technology, Engineering, Mathematics › Technology & Engineering January 1960 Price $48.56 Free Shipping Send to a friend Used - Good Good condition. Paperback edition. (Maryland, gold mines and mining) $48.56 1 in Stock at Warehouse Quantity Add Free Shipping to continental U.S. OR $1.00 per item discount if shipped to store.