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• Introduction <br />This Attachment addresses all coal exploration drill holes for the New Horizon #1 and #2 areas. <br />The initial coal exploration drilling was done by Peabody Coal Company, the owners of the original <br />permit on the site. All of these holes are addressed in Attachment 2.04.6-1. All hole locations and <br />status are shown on Map 2.04.6-7. <br />Additional holes were drilled by Western Fuels in 1993, 1994 and 1995. These are also shown on <br />the same map. The 1993 holes were part of an exploration permit and not part of the mining and <br />reclamation permit for the site. The 1994 and 1995 holes were part of the existing permit. All 1994 <br />and1995 holes were mined through, as shown on Map 2.04.6-7. Additional holes were drilled in <br />2001, 2002 and 2004. Holes were planned for 2005, but were not drilled until the Spring of 2006, <br />(4/3 - 5/3/06). Going forward, periodic in-fill holes will be needed to more accurately define the coal <br />reserve at New Horizon. However, any new drilling programs will be permitted through the Notice <br />of Intent rather than through minor revisions of the permit. <br />. Typical Drilling Program Description <br />The typical drilling program consists of a series of holes selected to provide necessary in-fill data <br />for continued mine planning and engineering. The holes will be rotary drilled using air mist and a <br />bit diameter of approximately 5-1/2". The hole is drilled to approximately ten feet below the bottom <br />of the LDx to allow for complete loggin of the LDX seam. <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 and coring at <br />the depths required for New Horizon. Suppport equipment will include a 1500 to 3000 gallon water <br />truck, and a driller's pickup. Actual equipment used and drill hole dimensions will vary depending <br />on the contractor chosen. <br />Earth Moving Requirements <br />Drill holes locations are typically selected to allow drilling with no earthwork required. However if <br />• any earthwork is required topsoil will be removed and stored properly pending post mine-through <br />REVISED FE- 2007 <br />