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

i
Oxbow Mining LLC
Elk Creek Mine
Hole Number: GVB 10-03 Project ID.: Elk Creek Mine Gob Vent Boreholes
i Lease Number: COC 61357 (State or Federal) Surface Owner: USFS
Date Commenced: 27-Jul-07 Date Completed: 11-Aug-07
Contractor: Stewart Bros, Rig Type: Failing 2500 Rig 45
Geologist: Doug Allen Date: 15-Jan-08 Toolpusher: Joe Sanchez
Driller: Bryan Joe Truck Driver: J. Billy Helper: S. Platero
Bryan Tulley T. Martinez C. Charley
Earl Marlinez D. Hudson 0. Chacho
Coordinates: N. 18817.04 E. 27308.90
Location: Township, Range&Section: SE 1/4 Sec.35,T.12S., R.90W.
Ground Elevation: 8167' Collar Elevation:
Geophysical Log Measured From: Ground Elevation
Total Depth: 2180' Probe Depth: 2173' Fluid Level: NA
Casing Type: steel, T&C Size: 9 5/8"
Casing Type: steel,FJ Size: 7"(5 slotted,2 solid)
Depth: 9 5/8":0-2020' Recovered(Y or N): N
7": 1971-2111 N
Bit Information
Surface Casing 17"Tricone to 20'; (14"surface casing)
Main Hole (Reamed) 121/4"Tricone to 2020'
Core: NA
Bottom Hole 8 3/4"Tricone to 2180'
Footage Plugged: 2180' Cored: NA
Drilling Medium: Air: Foam/Water: Mud: Foam Injection:
Depths: 0-286' 286-2180'
Lost Circulation Depths: NA Regained? (Y or N):
Water Invasion Depth or Intervals: NA Estimated Inflow Rates:
Gas Invasion Depth or Interval: 2125-2135'
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: 73' Q 256deg.
Hole Cemented(Y or N ), Type: Y No.of Bags: 18 yds por land for 9 5/8 annulus
Interval: to surface
Coal Core Sent To: NA Rock Sent To: NA
Comments: Drilled 8 3/4"pilot hole to verify mineable thickness,then reamed
121/4" to 2020'for 9 5/8"casing. Cuttings filled bottom hole during reaming,cleaned out to 2120'.
9'cement plug from 2111-2120'. Bottom of 7"slotted casing 13'above D2 seam(2124-2135').
9 5/8"casing abandoned to surface with 33 cubic yards Portland type 11 cement July,2008.