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NWCC, INC. <br />FIELD REPORT <br />Project: Refuse Pile <br />Location: Foidel Creek Mine <br />Client: Twentymile Coal Co. <br />Project No.: 99 -3983 <br />Report No.: 63 <br />Date: <br />09/16/11 <br />Time: <br />4.0 <br />Mileage: <br />44 <br />Engr. /Tech: <br />CR <br />Work Performed: <br />As requested, we visited the project site on today's date and conducted compaction test No.'s 471 through 473 on <br />the material being placed in the lower drainage on the new Refuse Pile Expansion. <br />We also obtained a sample of the waste coal fill material and returned it to our laboratory in Steamboat Springs, <br />Colorado for standard checkpoint Proctor testing. The sample matched a previous curve on Proctor No. 7P. <br />Remarks: <br />The material tested generally met the project specifications for compaction. <br />Please refer to the attached sheet for results of today's testing. <br />Verbal Discussions: <br />Brent Barnes of Twentymile Coal Company was present during a portion of our testing. Grading and compaction <br />was in progress during our time on -site. <br />