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 15-01 A Project ID.: Elk Creek Mine Gob Vent Boreholes
Lease Number: COC-61357 (State or Federal) Surface Owner: Hotchkiss
Date Commenced: 19-Oct-09 Date Completed: 23-Oct-09
Contractor: Himes Drilling Rig Type: Atlas Copco RD20
Geologist: Doug Allen Date: 13-Nov-09 Toolpusher: Matt Himes
Driller: Jim Weatherton Truck Driver: Will Juusola Helper: Beau 0.
Sam Homedew Tommy Dennis Shaun L.
Coordinates: N. 15694.06 E. 33662.77
Location: Township,Range&Section: SW 1/4, Sec.31,T.12 S,, R. 90 W.
Ground Elevation: 7631' Collar Elevation:
Geophysical Log Measured From: ground Elevation
Total Depth: 1730' 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: 0-1630' Recovered(Y or N): N
Depth: 1550-1730' Recovered(Y or N): N
Bit Information
Surface Casing 16"Tricone to 20'(14"surface casing)
Main Hole 121/4" PDC from 20-1630'
Core:
Bottom Hole 8 3/4"Tricone from 1630-1730'
Footage Plugged: 0-1730' Cored: NA
Drilling Medium: Air: Foam/Water: Mud: Foam Injection:
Depths: 0-120' 120-1630'
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: 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: N No.of Bags:
Interval:
Coal Core Sent To: NA Rock Sent To: NA
Comments: 7"casing overlaps 80'inside 9 5/8"casing.
9 5/8"annulus cemented with 30 bags plus 5 yds neat cement slurry.
Directional hole drilled with Scientific Drilling, azimuth 279.
9 5/8"casing abandoned to surface with 11 cubic yards portland cement slurry May,2012.
Himes Drilling Colorado water well license#1285