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Chen 0 Northern,Inc. Consulting Engineers and Scientists <br /> 5080 Road 154 <br /> Glenwood Springs Colorado 81601 <br /> 303 945-7458 <br /> 303 945-2363 Facsimile <br /> August 26, 1993 <br /> Mid-Continent Resources, Inc. <br /> Attn: Ms. Diane Delaney <br /> P.O. Box 1298 <br /> Glenwood Springs, CO 81602 <br /> Subject: Waste Coal Piles <br /> Job No. 4 531 93 <br /> Dear Ms. Delaney: <br /> As requested, Chen-Northern, Inc. has performed compaction tests on the "Sutey" coal <br /> disposal pile. This pile is located to the northwest of the existing mine building and is north <br /> of Coal Creek. Five tests were taken in pits which were excavated prior to our arrival and <br /> three tests were taken at the top of the existing pile. <br /> Our test results indicate that the compaction met the required specification of 90%standard <br /> Proctor density with the exception of Test No. 7 taken at the surface. Test No. 7 was within <br /> 1% of the desired density and could easily be compacted to meet specifications. <br /> Our test results are attached. <br /> If you have any questions or if we can be of further service, please call. <br /> Sincerely, <br /> CHEN-NORTHERN, INC. <br /> Bobby J. Hays <br /> BJH/bjs <br /> IIIIIi <br />