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PERMFILE61860
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PERMFILE61860
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Entry Properties
Last modified
8/24/2016 11:08:22 PM
Creation date
11/20/2007 7:19:14 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981022
IBM Index Class Name
Permit File
Doc Date
12/11/2001
Doc Name
1998 Report
Section_Exhibit Name
EXHIBIT 2.04-E3 Tab F Part 1
Media Type
D
Archive
No
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proximity of active D-seam bums, EC-5 would give early warning if the bums <br />progressed toward the well site. EC-6 was completed as a water monitor well in <br />the D-seam in the Elk Creek drainage. Wells BC-1, ECG and EC-7 were <br />completed using 2° PVC casing and well screens. Well EC-5 was completed <br />using 1" black steel pipe with slotted pipe in the D-seam horizon. Completion <br />diagrams for each well accompany this report in Section 4. <br />RESULTS <br />The bum areas were more extensively burned than anticipated. Some of these <br />burn areas were still active and should be avoided by the mine entries. One <br />entry location in the Elk Creek drainage was found between the burn areas. This <br />location is shallow and is next to Elk Creek itself, approximately 2200 feet north <br />of the new Oxbow stacking tubes. <br />Water flow through the D-seam was difficult to determine, due to the numerous <br />lost circulation zones encountered in the drill holes. Most of these zones are <br />collapse fractures caused by the collapse of the rock overlying burned coal. <br />Estimates of total water flow into the drill holes ranged from dry in the southwest <br />bum area to 10 gpm down dip. <br />Fresh coal core was analyzed from EC-5, EC-6, EC-10 and EC-12. To assist in <br />the planning of the mine entries, the coal core from each hole was broken into <br />• increments and each increment received a short proximate analysis. These <br />analyses and an arithmetic average of each hole are provided as Table 2. <br />Selective mining of the D-seam may reduce the ash content of the D-seam. By <br />leaving the lower parting and the lower portion of the D-seam, the ash content <br />may be reduced by 4-5°~. Table 3 compares the full seam composites with the <br />selective seam composites. <br />Two partings in the D-seam were located from the core descriptions. The lower <br />parting is approximately 2-3 feet above the base of the seam. Where cored <br />during the 1998 drill program, this lower parting ranges from 0.3 to 0.7 feet in <br />thickness. The lithology of this parting ranges from a shaley coal to a shale and <br />appears to be consistent in location. <br />The upper parting is approximately 7-9 feet above the base of the seam. This <br />upper parting ranges from 0.0 to 3.2 feet in thickness and is very erratic to the <br />northwest and west of Elk Creek. Lithology ranges from a shaley coal to <br />interbedded shale and coal. Thickness and rock content of the upper parting <br />increase to the northeast and east of Elk Creek (EC-10). <br />During the drilling program, Glenn Miller undertook some joint set mapping on <br />the west and east slopes of Elk Creek in the area of the proposed underground <br />. entry. Two joint sets were measured. The primary joint set ranged in azimuth <br />Page 3 of 1 <br />
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