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Oxbow Mining LLC <br /> Elk Creek Mine <br /> Hole Number: GVB 16-05B Project ID.: Elk Creek Mine Gob Vent Boreholes <br /> Lease Number: COC-61357 (State or Federal) Surface Owner: Hotchkiss <br /> Date Commenced: 5-Dec-10 Date Completed: 23-Jan-11 <br /> Contractor: Himes Drilling Rig Type: Atlas Copco RD20 <br /> Geologist: Doug Allen Date: 23-Jan-11 Toolpusher: Matt Himes <br /> Driller: Jim Weatherton Truck Driver: Kirk Homedew Helper: Richard M. <br /> Sam Homedew Will Juusola Trey H./Chad H. <br /> Coordinates: N. 16256.80 E. 36629.00 <br /> Location: Township,Range&Section: SE 1/4, Sec. 31,T.12 S.,R.90 W. <br /> Ground Elevation: 8094' Collar Elevation: <br /> Geophysical Log Measured From: ground Elevation <br /> Total Depth: 2214' Probe Depth: NA Fluid Level: NA <br /> Casing Type: steel T&C Size: 9 5/8" <br /> Casing Type: Size: <br /> Depth: 0-1413' Recovered(Y or N): N <br /> Depth: Recovered (Y or N): <br /> Bit Information <br /> Surface Casing 16"Tricone to 42'(14"surface casing) <br /> Main Hole 121/4" PDC from 42-1413' <br /> Core: <br /> Bottom Hole 8 3/4"Tricone from 1413-2214' <br /> Footage Plugged: 2214' Cored: NA <br /> Drilling Medium: Air: Foam(Water: Mud: Foam Injection: <br /> Depths: 0-130' 130-2214' <br /> Lost Circulation Depths: 2000' Regained? (Y or N): N <br /> Water Invasion Depth or Intervals: 130' Estimated Inflow Rates: 2 gpm <br /> Gas Invasion Depth or Interval: NA <br /> Geophysical Logging Contractor: Directional hole-no logging. <br /> Logs Run: Gamma: Neutron: <br /> Temperature: Density: <br /> Resistivity: Caliper: <br /> Other(SP, Foc. Elec., Drift,Dep., Sonic): <br /> Hole Cemented (Y or N ),Type: Y No.of Bags:6 yds for 9 5/8"annulus <br /> Interval:to surface <br /> Coal Core Sent To: NA Rock Sent To: NA <br /> Comments: Drilled into gob behind longwall. No 7"casing-8 3/4'hole left open. <br /> Drilled directional from 290-1413'. Bottom of 9 5/8"casing located 2053 at azimuth 3061 degrees, <br /> 9 5/8"casing abandoned to surface with 18 yds portland type II cement September,2011. <br /> Himes Drilling Colorado water well license#1285 <br />