2022-10-26_PERMIT FILE - C1981041 ‎(5)‎

• Permit No: C1981041
• IBM Index Class Name: Permit File
• Doc Date: 10/26/2022
• Section_Exhibit Name: Tab 12 Operation Plan
• Media Type: D
• Archive: No

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It is anticipated that both room and pillar methods and retreat
type longwall techniques will be utilized depending upon conditions for
the extraction of the coal.
Additional information pertaining to this lease can be found in the
drill hole data accompanying this report.
Lease C-029889
Mineable Reserve Base
(Carbonera)
Category
Acres
Avg. Thickness
Tons
Measured
Measured
351.68
6.97'
Indicated
1711.82
6.89'
Inferred
458.87
6.78'
Avg. BTU/Pound
Tons (As Received)
4,415,256 10,426
21,241,835 10,426
5,603,085 10,426
Recoverable Reserve
(502 Recovery Rate)
Category
Acres
Avg. Thickness
Tons
Measured
349.61
6.97
2,193,096
Indicated
1696.65
6.89
10,528,363
Inferred
438.42
6.78
2,675,270
2. Cameo Seam
The Cameo coal zone is notable for the thickness of its seams
and its great extent. It has been the most productive zone in the Book
Cliff's coal field. The interval between the Cameo and the underlying
Palisade on this lease varies from 416 to 457 feet and averages 429
feet. (See Typical Cross Section) The interval between the Cameo and
the overlying Carbonera ranges from 40 to 100 feet and averages 64 feet.
This interval generally consists of thin coals and carbonaceous, laminated
sandy siltstores, although significant sandstones (over 10 feet thick)
are present in four of the existing test holes. Typically the immediate
and main top consists of laminated to thin bedded sandy carbonaceous
siltstone and silty carbonaceous sandstone. The seam, which occurs as a
single bed over much of the lease, appears to split toward the southeast,
where one to three rider seams are present.