2020-09-30_PERMIT FILE - C1981022 ‎(2)‎

• Permit No: C1981022
• IBM Index Class Name: Permit File
• Doc Date: 9/30/2020
• Doc Name: Borehole Abandonment Reports
• Section_Exhibit Name: Exhibit 2.04-E3 Tab I/Item 9
• Media Type: D
• Archive: No

Oxbow Mining LLC
Elk Creek Mine
Hole Number: GVB-LW09-04 Project ID.: Elk Creek Mine Gob Vent Boreholes
Lease Number: COC-61357 (State or Federal) Surface Owner: BLM
Date Commenced: 17-Aug-06 Date Completed: 23-Aug-06
Contractor: WDC Drilling,Inc. Rig Type: Gefco 90K
Geologist: Doug Allen Date: 15-Oct-06 Toolpusher: Kevin Jones
Driller: Alan Taylor Truck Driver: Jay Ross Helper: Geoff Sakioka
Kevin Lewis Marvin Eldridge Greg Olson
Coordinates: N. 17294.34 E. 29017.90
Location: Township,Range&Section: SW 1/4 Sec.36,T. 12 S.,R. 91 W.
Ground Elevation: 7424' Collar Elevation:
Geophysical Log Measured From: Ground Elevation
Total Depth: 1384' Probe Depth: 1380' Fluid Level: NA
Casing Type: steel,T&C Size: 9 5/8"
Casing Type: slotted steel, T&C Size: 7"
Depth: 0-1247' Recovered(Y or N): N-cemented
Depth: 1178.5-1332,5' Recovered(Y or N): N-loose
Bit Information
Surface Casing 17" Tri-cone(14"casing)from 0-20'
Main Hole 121/4"Tri-cone to 1250'
Core:
Bottom Hole 8 3/4"Tri-cone to 1384'
Footage Plugged: 1384' Cored: 0
Drilling Medium: Air: Sta-Foam 202/Water: Mud: Foam Injection:
Depths: 0-20' 20-1384'
Lost Circulation Depths: NA Regained? (Y or N):
Water Invasion Depth or Intervals: NA Estimated Inflow Rates:
Gas Invasion Depth or Interval: NA
Geophysical Logging Contractor: Jet West Geophysical, LLC
Logs Run: Gamma: X Neutron:
Temperature: Density: X
Resistivity: X Caliper: X
Other(SP, Foc. Elec., Drift, Dep.,Sonic): Deviation: 11.3' @ 154 degrees
Hole Cemented(Y or N ),Type: Y No.of Bags: 6.5 yds portland for 9 5/8 annulus
Interval: tosuriace
Coal Core Sent To: NA Rock Sent To: NA
Comments: 7"casing(5 slotted,2 blank,total 154')overlaps 68.5'inside 9 5/8"casing.
9 518"casing abandoned to surface with 13 cubic yards portland type 11 cement July,2 009.