Lime Kilns: Relics of one of Indiana's Historic Mineral Industries
Lime was used by pioneers mostly for making mortar and plaster and for sweetening the soil. It is used today in scores of chemical, manufacturing, and building processes. Large amounts from Michigan limestone are used for steelmaking in the Calumet region. But no lime has been produced from Indiana limestone since 1953, when the last operation near Milltown was closed. The Geological Survey has mapped some areas where a good supply of high-purity limestone occurs, and the increasing importance of lime makes these areas attractive for future production.
Our Hoosier State Beneath Us: Historical