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\~ <br />• Exhibit A . ~~~E~V~O <br />Due to poor roof and floor conditions encountere~~~in mini,ny west <br />in the # 1 West Submains, minor modifications in minim plans were <br />made. Little adverse affect was anticipated while mining under Ward <br />Creek. In March, 1981, when mining conditions worsened as Grand'' <br />t4esa Coal Company mined closer to Ward Creek, two drill 'holes were <br />put in .to determine the alluvial cover over the projections under <br />4lard Creek. CE-81-1 was drilled between the #1 and #2 entry on the <br />east side of Ward Creek and CE-81-2 was drilled just north of the <br />#6 entry on the west side of Ward Creek. Refer to Geology P7ap, <br />2.04.5-1, the Isopach tdap AA, 2.04.5-3 and the Geologic Cross Section <br />Map, 2.04.5-5, for the location of these holes. Figures 2.04.5-24 <br />and 2.04.5-25 are drillers logs of the holes. The decision was made <br />to drop the #1 entry, to go to 120 foot centers on crosscuts, and to <br />mine entries and cross cuts 16 feet wide. To avoid the worst of the <br />poor roof conditions, the rock was mined to the height it naturally <br />fell to. To avoid the soft floor, one foot or more of coal was left. <br />The #1 entry will be picked up once roof conditions stabilize in good <br />condition. Crosscut centers will return to 80 feet and mining width <br />returned to 18 feet when conditions warrent. <br />The amount of water encountered in mining so close to the <br />suberop was less than expected. Less water was encountered under ward <br />Creek than while driving the #1 Mains. The consistancy of the <br />cuttings near the base of the alluvium in hole CE-81-1 had a high <br />clay content which would have the affect of seating the subcrop. <br />Little adverse affect is anticipated in the "D" coal seam, <br />Red Canyon #2 Mine. Projections for each mine remain the same. <br />