2018-04-18_PERMIT FILE - C1981022A ‎(2)‎

• Permit No: C1981022A
• IBM Index Class Name: Permit File
• Doc Date: 4/18/2018
• Doc Name: Borehole Abandonment Reports
• Section_Exhibit Name: Exhibit 2.04-E3 Tab I/Item 9
• Media Type: D
• Archive: Yes

Oxbow Mining LLC
Elk Creek Mine
Hole Number: GVB 09-01 Project ID.: Elk Creek Mine Gob Vent Boreholes
Lease Number: COC -61357 (State or Federal) Surface Owner: USFS
Date Commenced: 27 -Nov -06 Date Completed: 10 -Feb -07
Contractor: REI Drilling
Geologist: Doug Allen
Driller: Tim Fields
Rig Type: Fletcher
Date : 15 -Jan -08
Truck Driver: Scott Copley
Toolpusher:
Helper: Duane
Paul
Coordinates: N.
17932.56 E. 23056.88
Location: Township,
Range & Section: SW 1/4 Sec. 35, T.12S., R. 90W.
Ground Elevation:
6519' Collar Elevation:
Geophysical Log Measured From: Ground Elevation
Total Depth:
924' Probe Depth: NA Fluid Level: NA
Casing Type:
Sonic FJ Size: 6"
Casing Type: Sonic FJ, slotted Size: 4.5"
Depth:
6": 0-730' Recovered (Y or N): N
Depth:
4": 603-903' Recovered (Y or N): N
Bit Information
Density:
Surface Casing
13 3/4" Tricone for 10"x50' surface
Main Hole
3 3/4" PDC pilot reamed to 5 3/4", then reamed to 9 3/4", to 740'
Core:
NA
Bottom Hole
3 3/4" PDC pilot reamed to 5 3/4", to 904'
Footage Plugged: 924' Cored:
NA
Drilling Medium: Air: Foam/Water:
Mud: Foam Injection:
Depths: 0-924'
Lost Circulation Depths: 0-740'
Regained ? (Y or N): N
Water Invasion Depth or Intervals: 580 590'
Estimated Inflow Rates: 8-10 gpm
Gas Invasion Depth or Interval: NA
Geophysical Logging Contractor: NA
Logs Run: Gamma:
Neutron:
Temperature:
Density:
Resistivity:
Caliper:
Other (SP, Foc. Elec., Drift, Dep., Sonic):
Hole Cemented( Y or N ),Type: Y
No. of Bags: 17 yds ponland for annulus
Interval: see below
Coal Core Sent To: NA
Rock Sent To: NA
Comments: Directional hole launched over headgate of
panel 9. 4" slotted
casing sits @ 903', 15' above D2 seam @ 918'.
annulus at surface. Double volume of cement did not return to surface. Expandable
polyurethane resin and 6 sacks cement placed @ 50' to stabilize casina at surface.
6" casing abandoned to surface with 6 cubic yds. portland type 11 cement November, 2007