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 16-04B Project ID.: Elk Creek Mine Gob Vent Boreholes
Lease Number: COC-61357 (State or Federal) Surface Owner: Hotchkiss
Date Commenced: 12-Jan-11 Date Completed: 21-Jan-11
Contractor: Himes Drilling Rig Type: Atlas Copco RD20
Geologist: Doug Allen Date : 22-Jan-11 Toolpusher: Matt Himes
Driller: Jim Weatherton Truck Driver: Kirk Homedew Helper: Richard M,
Sam Homedew Will Juusola Trey H./Chad H.
Coordinates: N. 16640.10 E. 35897.50
Location: Township,Range&Section: SE 1/4, Sec. 31,T.12 S.,R.90 W.
Ground Elevation: 7989' Collar Elevation:
Geophysical Log Measured From: ground Elevation
Total Depth: 2072' Probe Depth: NA Fluid Level: NA
Casing Type: steel T&C Size: 9 5/8"
Casing Type: Size:
Depth: 0-1796' Recovered (Y or N): N
Depth: Recovered(Y or N):
Bit Information
Surface Casing 16"Tricone to 42'(14"surface casing)
Main Hole 121/4" PDC from 42-1796'
Core:
Bottom Hole 8 3/4"Tricone from 1796-2072'
Footage Plugged: 0-2072' Cored: NA
Drilling Medium: Air: Foam/Water: Mud: Foam Injection:
Depths: 0-290' 290-2072'
Lost Circulation Depths: NA Regained? (Y or N):
Water Invasion Depth or Intervals: 110, Estimated Inflow Rates: 2 gpm
Gas Invasion Depth or Interval: approx 1700-2072'
Geophysical Logging Contractor: Directional hole-no logging.
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:21 yds for 9 5/8"annulus
Interval:to surface
Coal Core Sent To: NA Rock Sent To: NA
Comments: Drilled into gob behind longwall. No 7"casing-8 3/4"hole left open.
Drilled directional from 290-1796'. Bottom of 9 5/8"casing located 232,4'at azimuth 275,56 degrees.
9 5/8"casing abandoned to surface with 27 yds portland type II cement July,2011.
Himes Drilling Colorado water well license#1285