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Oxbow Mining LLC <br /> Elk Creek Mine <br /> Hole Number: GVB-LW-04-02 Project ID.: Elk Creek Mine-Gob Vent Boreholes <br /> Lease Number: COC-61357 (State or Federal) Surface Owner: BLM <br /> Date Commenced: 8-Sep-04 Date Completed: 15-Sep-04 <br /> Contractor: Stewart Bros. Rig Type: Gardner-Denver <br /> Geologist: Doug Allen Date: 21-Sep-04 Toolpusher: Frank Pichardo <br /> Driller: J. Barris Truck Driver: B.Joe Helper: P.Pizano <br /> F. Yonnie B. Roy E.Martinez <br /> Coordinates: N. 12577.5810 E. 38277,7780 <br /> Location: Township, Range&Section: SE 114 Sec.6,T. 13 S.,R. 90 W. <br /> Ground Elevation: 8086' Collar Elevation: <br /> Geophysical Log Measured From: Ground Elevation <br /> Total Depth: 2095' Probe Depth: 2090' Fluid Level: NA <br /> Casing Type: Main hole-Solid steel Size: 7" <br /> Casing Type: Bottom hole-slotted, flush thread Size: 51/2" <br /> Depth: 0-1917' Recovered(Y or N): N <br /> Depth: 1870'-2030' Recovered(Y or N): N <br /> Bit Information <br /> Surface Casing 121/4" Tri-cone from 0-20'(10"casing) <br /> Main Hole 9 7/8"Tri-cone from 20'to 1955' <br /> Core: NA <br /> Bottom Hole 6 3/4"Tri-cone from 1955'to 2095' <br /> Footage Plugged: 2095' Cored: 0 <br /> Drilling Medium: Air: Sta-Foam 202/Water: Mud: Foam Injection: <br /> Depths: 0-20' 20'-2095' <br /> Lost Circulation Depths: NA Regained? (Y or N): NA <br /> Water Invasion Depth or Intervals: NA Estimated Inflow Rates: NA <br /> Gas Invasion Depth or Interval: NA <br /> Geophysical Logging Contractor: Jet West Geophysical,LLC <br /> Logs Run: Gamma: X Neutron: <br /> Temperature: Density: X <br /> Resistivity: X Caliper: X <br /> Other(SP, Foe. Elec., Drift, Dep.,Sonic): Deviation-67,1'at 241.85 degrees <br /> Hole Cemented(Y or N ),Type: Y No.of Bags: 22 yds.Portland for annulus <br /> Interval: to surface <br /> Coal Core Sent To: NA Rock Sent To: NA <br /> Comments: <br /> Annulus volume calculated Q 18 yds,,pumped 14 yds. down drill pipe,through stinger seated into <br /> grout shoe,and up around outside of casing. 8 yds. placed from surface. <br /> D searn from 2052'-2069'. Bottom hole drilled to 2095'for logging tool rattail. Hole filled back up <br /> to 2047'(5'above seam)with coal fines. Plug gel(2 bags,dry)placed on top of coal fines to 2044'. <br /> 4 bags of cement placed on top of gel,to 2030'. Bottom of 5.5"slotted casing(80'slotted below <br /> 80'solid)set at 2030',with 47'overlap inside 7'. <br /> Stewart Bros. Drilling: Colorado water well license# 1141 <br /> Pneumatic plug set Q 370'on Aug. 19,cemented and abandoned on Aug.24,2005. <br />