2018-01-23_PERMIT FILE - C1981041A ‎(6)‎

• Permit No: C1981041A
• IBM Index Class Name: Permit File
• Doc Date: 1/23/2018
• Section_Exhibit Name: Tab 12 Operation Plan
• Media Type: D
• Archive: Yes

Page Two
• The ash content is variable, ranging from a high of 15.2 percent to a low of 5.2
percent. To maintain a consistent coal quality, a washing process must be used.
Information on the coal quality in the Cameo "C" seam in Lease No. C-078049
is not available at present.
METHOD USED IN CALCULATION OF RESERVES
The in-place coal reserves of Federal Lease No. C-078049 were calculated by
using data from drill hole logs. Drill Hole EA was core sampled and holes A, B
and C were electrically logged. Numerous coal seam measurements have been taken
underground in the Roadside Mine in the "B" seam. Using the areas of the three
zones - measured, indicated, and inferred - the weighted average was found, the
average thickness derived, and the tonnage calculated.
• An average density of 90 pounds per cubic foot (1960 tons per acre-foot) was
calculated from analysis of samples from the current "B" seam mine workings. The
Cameo "C." seam has not been analyzed for this date.
The areal influence of the drill holes was found by using criteria from General
Mining Order No. 1 as follows:
Measured - 1/4 mile radius
Indicated - 1/4 to 3/4 mile radius
Inferred - 3/4 to 3 mile radius
A Planimeter was used to calculate the areas of each zone.
CALCULATION OF COAL RESERVE BASE, CAMEO "B" SEAM
(Number of Acres in Area) x (Average Thickness of Seam) x
(Average Density of
Coal=90 lbs/ft 3) x
(2I Tonbs) =
Tons Per Area
Estimated coal reserves
of Cameo "B" seam in
Federal Lease
No. C-078049:
•
Area (Acres) Avg.
Thickness
Tons
(Feet)
Measured
422.56
5.08
4,208,000
Indicated
234.55
6.94
3,191,000
Inferred
-- _
--
--
657.11
7,399,000