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Oxbow Mining LLC <br /> Elk Creek Mine <br /> Hole Number: GVB 17-03 Project ID.: Elk Creek Mine Gob Vent Boreholes <br /> Lease Number: COC-61357 (State or Federal) Surface Owner: Hotchkiss <br /> Date Commenced: 6-Nov-10 Date Completed: 10-Nov-10 <br /> Contractor: Himes Drilling Rig Type: Atlas Copco RD20 <br /> Geologist: Doug Allen Date: 5-Dec-10 Tootpusher: Matt Himes <br /> Driller: Jim Weatherton Truck Driver: Kirk Homedew Helper: Richard M. <br /> Sam Homedew Will Juusola Trey H. <br /> Coordinates: N. 17892.15 E. 35155.84 <br /> Location: Township,Range&Section: N1/2, S1/2, Sec.31,T. 12 S.,R.90 W. <br /> Ground Elevation: 8055' Collar Elevation: <br /> Geophysical Log Measured From: ground Elevation <br /> Total Depth: 2252' Probe Depth: 2235' Fluid Level: NA <br /> Casing Type: steel T&C Size: 9 5/8" <br /> Casing Type: sol/slot steel T&C Size: 7" <br /> Depth: 0-2092' Recovered(Y or N): N <br /> Depth: 2022-2193' Recovered(Y or N): N <br /> Bit Information <br /> Surface Casing 16"Tricone to 31'(14"surface casing) <br /> Main Hole 121/4" PDC from 31-2092' <br /> Core: <br /> Bottom Hole 8 3/4"Tricone from 2092-2232' <br /> Footage Plugged: 0-2232' Cored: NA <br /> Drilling Medium: Air: Foam[Water: Mud: Foam Injection: <br /> Depths: 0-220' 220-2232' <br /> Lost Circulation Depths: NA Regained? (Y or N): <br /> Water Invasion Depth or Intervals: NA Estimated Inflow Rates: <br /> Gas Invasion Depth or Interval: NA <br /> Geophysical Logging Contractor: Jetwest Geophysical <br /> Logs Run: Gamma: Y Neutron: <br /> Temperature: Density: Y <br /> Resistivity: Y Caliper: Y <br /> Other(SP, Foc.Elec., Drift,Dep.,Sonic): cement dump bailer/Gas gun <br /> Hole Cemented(Y or N ),Type: N No.of Bags: <br /> Interval: <br /> Coal Core Sent To: NA Rock Sent To: NA <br /> Comments: 7"casing overlaps 70'inside 9 5/8"casing.9 5/8"annulus cemented <br /> with 5 yds neat cement slurry.Tagged gravel at 2201',tagged cement plug at 2193'. <br /> Optical borehole imager(fracture log)run to 1700' before cuttings/foam clouded image. <br /> Ran three gasguns: 10'@2172-2182'(sandstone); 10'@2138-2148'(siltstone)and <br /> 10'@2114-2124' (siltstone)to stimulate methane flow ahead of longwall. <br /> 9 5/8"casing abandoned to surface with 43 cubic yards portland cement slurry June,2012. <br /> Himes Drilling Colorado water well license#1285 <br />