Throughout the month of August, join the Missouri Mines State Historic Site in Park Hills for an outdoor guided tour of the historic head frame and mill buildings. For much of the 20th century, these structures were the surface hub of a vast underground mine system extending beneath the communities of Missouri's Old Leadbelt. It was here that lead ore was brought up the mine shaft to the surface, then run through the mill buildings to be crushed and prepared for shipment to the smelter. This free program will take place at 11 a.m. every Saturday throughout the month of August. For safety reasons, the head frame and mill buildings will be seen only from the outside. The historic site is located south of St. Louis, on the south side of Highway 32 at the Flat River Drive overpass in Park Hills. For more information, contact the park at 573-431-6226.