The Graue Mill is a water-powered grist mill that was originally erected in 1852. Now a museum, it is one of two operating water-powered gristmills in Illinois. Graue and his family were Pietist Germans who opposed American slavery. The mill is one of three authenticated Illinois stops on the Underground Railroad, the movement that helped fugitive slaves escape from the American South to Canada.
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Mazzochi’s legislation, House Bill 5836, seeks to continue the work of preserving the mill and all of its surrounding grounds and historical components. The legislation was prepared in response to proposals before the Forest Preserve to destroy the existing dam. The legislation forbids the reduction, demolition, or removal of any structures associated with the mill and the dam without the approval of an oversight board that includes representation from the surrounding towns and historical society.