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-LW-04-01 Project ID.: Elk Creek Mine-Gob Vent Boreholes
Lease Number: COC-61357 (State or Federal) Surface Owner: BLM
Date Commenced: 10-Aug-04 Date Completed: 17-Aug-04
Contractor: Stewart Bros. Rig Type: Gardner-Denver
Geologist: Doug Allen Date: 15-Sep-03 Toolpusher: Frank Pichardo
Driller: J. Barris Truck Driver: B. Joe Helper: Wilburn
F. Yonnie B. Roy C. Delgarito
Coordinates: N. 13569.4927 E. 33640.9018
Location: Township, Range&Section: NW 114 Sec.6,T. 13 S., R. 90 W.
Ground Elevation: 7093' Collar Elevation:
Geophysical Log Measured From: Ground Elevation
Total Depth: 1075 Probe Depth: 1067 Fluid Level: NA
Casing Type: Main hole-Solid steel Size: 7 5/8"
Casing Type:iottom hole-slotted Size: 5 1/2"
Depth: 0-910' Recovered(Y or N): N
Depth: 831'-911' Recovered(Y or N): N
Bit Information
Surface Casing 141/4" Tri-cone from 0-40'(12"casing)
Main Hole 9 7/8"Tn-cone from 40'to 910'
Core: NA
Bottom Hole 6 3/4"Tri-cone from 910'to 1075'
Footage Plugged: 1075' Cored: 0
Drilling Medium: Air: Sta-Foam 202/Water: Mud: Foam Injection:
Depths: 0-40' 40-1075'
Lost Circulation Depths: NA Regained? (Y or N): NA
Water Invasion Depth or Intervals: NA Estimated Inflow Rates: NA
Gas Invasion Depth or Interval: unknown-0.8-3.2% @ wellhead
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-8'N.of surface location
Hole Cemented(Y or N ), Type: Y No.of Bags: 20,+6yds portland for annulus
Interval: to surface
Coal Core Sent To: NA Rock Sent To: NA
Comments: First 80'of 7 5/8"casing dropped to bottom of hole; retrieved w/oilfield spear and ok to use.
20 bags cement placed around bottom of 7 5/8"casing,topped off with 6 yds. Redi-mix,all poured from surface.
Bottom hole drilled thru D seam to verify elevation-survey mistake results in hitting D seam 63'high.
Resurvey shows hole still suitably located over panel. Bottom of solid casing lies 37'above coal(910'),
Bottom hole cemented up to 91 V; 80'of 51/2"slotted casing set with bottom @ 911',
Stewart Bros. Drilling: Colorado water well license# 1141
Pneumatic plug set @ 73'and abandoned to surface with 0.85 cubic yds portland type 11 cement August,2005.