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<br />7.0 REFERENCES
<br />~ Agapito Associates, Inc. (1988), "Core Hole Summary Report for NaTec 26-88-1, Piceance
<br />Creek Basin, Colorado," Report to NaTec Mines, Ltd., Rifle, Colorado, December.
<br />Agapito Associates, Inc. (1990), "Evaluation of Cylindrical and Long Horizontal Cavity Size,
<br />NaTec Leases, Piceance Creek Basin, Colorado," Report to NaTec Minerals, Inc., Rifle,
<br />Colorado, December.
<br />Baczynski, N. R. P. (1982), "Estimate of Rock Mass Properties: Dolphin Mine, King Island,"
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<br />Booth, C. J. (1992), "Hydrogeologic Impacts of Underground (Longwall) Mining in the Illinois
<br />Basin," Proceedings of the 3rd Workshop on Surface Subsidence Due to Underground
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<br />Chekan, G. J. and J. M. Listak (1993), "Design Practices for Multiple-Seam Longwall Mines,"
<br />IC-9360, Bureau of Mines Information Circulaz.
<br />Elsworth, D., J. Liu and Z. Ouyang (1994), "Some Approaches to Determine the Potential Influ-
<br />ence of Longwall Mining on Ground Water Resources," Proceedings of the International
<br />Land Reclamation and Mine Drainage Conference and Third International Conference
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<br />Goodman, R. E. (1976), Methods of Geological Engineering in Discontinuous Rocks, West Pub-
<br />lishing Company: St. Paul, Minnesota.
<br />Holland, C. T. (1947), "Effects of Unmined Seams of Coal by Mining Seams Above and Be-
<br />low," Proceedings, West Virginia Academy of Sciences, 19(2):113-132.
<br />Merritt, P. C. (1991), "As Time Changes, So Do Longwalls," Coal Nfining, 96(2)40119.
<br />Mitchell, S. J. (1981), "Stress Measurements at the Horse Draw Experimental Mine," Letter Re-
<br />port to F. Leonard, Multi Mineral Corporation.
<br />Peng, S. S. (1992), Surface Subsidence Engineering, Society for Mining, Metallurgy, and Explo-
<br />ration, Inc: Littleton, CO.
<br />SME (1992), SME Mining Engineering Handbook, 2nd Edition, Volumes I and 2, Hartman,
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<br />Snow, D. T. (1965), "A Pazallel Plate Model of Penneable Fractured Media," Ph.D. Thesis, Uni-
<br />_ ~ versity of California, Berkeley.
<br />Agapito Associates, Inc.
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