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 16-01C Project ID.: Elk Creek Mine Gob Vent Boreholes
Lease Number: COC-61357 (State or Federal) Surface Owner: Hotchkiss
Date Commenced: 27-Jul-09 Date Completed: 4-Aug-09
Contractor: Himes Drilling Rig Type: Atlas Copco RD20
Geologist: Doug Allen Date: 13-Nov-09 Toolpusher: Matt Himes
Driller: Jim Weatherton Truck Driver: Shaun L. Helper: Dave T.
Sam Homedew Tommy Dennis Eldon S,
Coordinates: N. 17015.93 E. 33758.62
Location: Township, Range&Section: SW 1/4, Sec. 31,T. 12 S., R.90 W.
Ground Elevation: 8121' Collar Elevation:
Geophysical Log Measured From: ground Elevation
Total Depth: 2144' Probe Depth: NA Fluid Level: NA
Casing Type: steel T&C Size: 9 5/8"
Casing Type: sol/slot steel T&C Size: 7"
Depth: 0-2050' Recovered(Y or N): N
Depth: 2004-2144' Recovered(Y or N): N
Bit Information
Surface Casing 16"Tricone to 19.5'(14"surface casing)
Main Hole 121/4"PDC from 19.5-2050'
Core:
Bottom Hole 8 3/4"Tricone from 2050-2144'
Footage Plugged: 0-2144' Cored: NA
Drilling Medium: Air: Foam/Water: Mud: Foam Injection:
Depths: 0-952'
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: no logging due to close proximity to GVB 16-01
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:5 yds for 9 5/8"annulus
Interval:to surface
Coal Core Sent To: NA Rock Sent To: NA
Comments: 7"casing overlaps 46'inside 9 5/8"casing
9 5/8"casing abandoned to surface with 9 yds portland type II cement October,2011.
Himes Drilling Colorado water well license#1285