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Map Explanation References
- DuMontelle, P. B., S. C. Bradford, R. A. Bauer, and M. M. Killey, 1981
- Mine Subsidence in Illinois: Facts for the Homeowner Considering Insurance:
Illinois State Geological Survey, Environmental Geology Note 99, 24 p.
- Guither, H. D., J. K. Hines, and R. A. Bauer, 1985
- The Economic Effects of Underground Mining upon Land Used for Illinois Agriculture:
Illinois Department of Energy and Natural Resources Document 85/01. 185 p.
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Land Reclamation Division
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