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• COAL RESERVE QUALITY ENHANCEMENT DRILL PROGRAM <br />INTRODUCTION <br />The New Horizon Mine coal reserves are based on approximately 95 boreholes drilled between the <br />mid-1980's and 1999. The bulk were drilled by Peabody Coal Company in the 1980's. Western <br />Fuels -Colorado (WFC) drilled about 35 holes from 1993 to 1999. Occasionally, WFC needs to drill <br />infill holes within the existing array to make more certain of its' reserve estimations concerning <br />various mining parameters such as coal quality, coal and overburden thickness, etc. WFC <br />anticipates that during the year 2001 such infill holes will be needed. <br />PROGRAM DESCRIPTION <br />The drill program will consist of eleven holes completed to depths that range from 60 to 125 feet <br />(see Figure 2.05.3(3)-12.1. The upper portion of each hole will be air rotary drilled to about 2 feet <br />on top of the upper coal seam (UDX). A spot core of about 22 feet will be bored to about 2 below <br />the lower coal seam (LDX). The hole will be completed with a 15 to 20 foot air rotary subdrill below <br />the LDX to allow for E-log probing of each hole. Rotary hole diameter for the top portion will be <br />between 4.5" and 5.5", the outside core diameter will be about 4.0" to 5.0", and the rotary subdrill <br />will be between 3 7/8" and 5.5". <br />The equipment to be used will consist of a medium-sized single-wall air rotary truck mounted drill <br />rig similar to a Portadrill TKT or Failing CF-15. This type of rig is capable of drilling the spot cores <br />needed. Support equipment will include a 1500 to 3000 gal water truck, boom truck and drillers' <br />• pick-up. Actual equipment used and drill hole dimensions will depend on the contractor selected <br />to do the work. <br />EARTHMOVING REQUIREMENTS <br />Nine of the eleven sites are on fairly level ground that will require no road or site preparation as they <br />are on pasture land. Two of the sites will require the clearing of brush or small diameter trees (< <br />6"), plus the construction of a small pad need only to level the drill. Estimated aggregate area of <br />disturbance is 2,000 ft2. Pad clearing will be tracked machinery supplied by the adjacent mine. <br />The two sites required drill pads will not required bladed access roads. Vegetative material cleared <br />will be piled adjacent to the drill pad for later burning. <br />DISTURBED AREA <br />An estimated 2,000 ft2 of topsoil will have to be removed to construct two drill pads. Topsoil <br />removed will be stored at an existing topsoil pile. Drill pads will be reclaimed in the normal <br />sequence of events as the holes will be mined through. See attached Table 2.05.3(3)-12.1 for <br />reclamation calculations should mining cease after drilling but before mine related disturbances <br />reach the drill sites. <br />IRewseo sia~l Attachment 2.05.3(3)10- 2 <br />