Mining in the Dunlap Quadrangle
Two seams were mined in the Dunlap Quadrangle, the Herrin and Springfield Coals. The Herrin Coal was mined in a small area northeast of the town of Kickapoo, generally before 1937 in local mines with relatively low production. The mines in the Springfield Coal were more extensive. Some were close to Peoria (near the southeastern corner of the quadrangle) or Edwards (near the southwestern corner of the quadrangle), as well as near the central portion of the quadrangle along Kickapoo Creek and associated tributaries. While most of the mining took place after mechanization, when mining in Illinois was at its peak (1930-1960), the Kramm Mine (mine index 7238) operated from 1886 to 1904.