1. Bauer, R.A., DeMaris, P.J., 1982. Geological investigation of roof and floor strata — Longwall demonstration, Old Ben No. 24 Mine. Illinois State Geological Survey, Contract/grant report 1982-2, 49 pp.
2. Baynard, D.N., Hower, J.C., 1984. Depositional settings of the coal-bearing, upper Tradewater Formation in western Kentucky, with emphasis on the Mannington (No. 4) coal zone. Lexington, University of Kentucky Institute for Mining and Minerals Research, Petrographic Characterization of Kentucky Coals — Final Report, Part 2, 90 pp.
3. Syntectonic sedimentation, rifts, and fault reactivation in the coal measures of Britain;Broadhurst;J. Geol.,1983
4. A contribution to the understanding of washouts, swalleys, splits, and other seam variations and the amelioration of their effects on mining in South Durham;Clarke;Miner. Eng.,1963
5. Effect of geology on roof stability in room-and-pillar mines in the Herrin (No. 6) coal of Illinois;Damberger;Ill. State Geol. Surv.,1980