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6.0 PROPOSED EXPLORATION DRILL PROGRAM <br />' 6.1 <br />EXPLORATION DRILL HOLES <br />This Exploration Drilling Program includes 98 drill holes. The exploration drill hole locations are <br />shown on Figure 6-1 and on Map 1 in the pocket of this report, along with the estimated <br />overburden, estimated coal outcrop line and the land ownership boundary between federal and <br />private land. These holes were selected based upon: overburden and total depth of the <br />proposed holes; their proximity to the outcrop line; and an average of 800-foot spacing and their <br />location on federal land. The prognosis of the exploration drill holes is listed in Table 6-1. <br />6.2 EXPLORATION METHOD <br />WFC's goal in conducting this coal exploration program is to further explore an area, for which <br />some coal information exists. From former drill holes (Eakins, 1986), there is known coal in the <br />vicinity, and WFC would like to further explore the quality and quantity of the prospect for <br />potential development. <br />6.2.1 Method <br />Since this is the first detailed investigation of the area, WFC proposes a phased program. WFC <br />proposes to drill about thirty holes initially to ascertain if the justification exists to complete the <br />drilling of all proposed exploration holes. The holes will be drilled with a truck mounted drilling <br />rig (comparable in size to a Gardner Denver 1000 or 1500). All drilling will be done with <br />air/mist/foam and the rig will have a mud pump to facilitate mixing and pumping mud for hole <br />plugging and abandonment. Cuttings will be used in plugging the holes and will be collected <br />and described (lithology) for five-foot intervals. <br />Drilling will commence with a 5-1/8" or 5-3/4" diameter pilot hole through the coal to <br />approximately twenty meters (sixty feet) below the coal seam. Immediately after the holes are <br />drilled, a bentonite slurry (drilling mud: 50 second Marsh funnel viscosity) will be pumped into <br />the hole for purposes of conditioning and stabilizating the hole. The rig will then move off the <br />hole. Each hole will then be logged with geophysical tools (natural gamma ray, gamma-gamma <br />density, resistivity, and caliper). Soon after the drilling has been completed, about one out of <br />every five holes will be "twinned" and core drilled through the coal. <br />Third Park Exploration License Application 16 <br />