Quarried primarily from the 1870s through the 1920s, the county's oolitic or fish roe limestone is renowned for its superior qualities. Soft and easily workable, Warren County limestone develops an extraordinary hardness and turns white when exposed to the elements. Trademarked by the White Stone Quarry as "Bowlinggreen Stone," oolitic limestone won awards at the 1876 Philadelphia Centennial Exposition, 1893 Columbian Exposition in Chicago and 1904 Louisiana Purchase Exposition.
White Stone Quarry, ca. 1929. At one time the Bowling Green area boasted the largest stone operations in the state.
Warren County, Kentucky, Limestone