GENERAL33853

• Permit No: C1980007
• IBM Index Class Name: General Documents
• Doc Date: 9/26/1989
• Doc Name: Part of Dec Doc Fed Leases C-1362 C-0117192 & D-044569
• From: MLRD
• To: OSM
• Permit Index Doc Type: Other Permits
• Media Type: D
• Archive: No

Doc Date:12/1112001 -~
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1 - STATE OF COLC

•
Roy Romer. Governor
DEPARTMENT OF NATURAL RESOURCES
MINED LAND RECLAMATION DIVISION
FRED R. BANTA, Dlr~ttor
July 26, 1989
Mr. Dave Maxwell
Office of Surface Mining Reclamation and Enforcement
western Technical Office
1020 15tH Street
Denver, Colorado 80202
RE: Mt. Gunnison No. I Mtne, TR 55, File C-80-007
Dear Mr. Maxwell:
Following is a summary of the 8-seam revision and other pertinent information
as you requested. The Mt. Gunnison Mine began producing coal in 1982 from the
F-seam. Full production using a continuous miner Has averaged approximately
500,000 tons per year from undermining approximately 900 acres of the 4276
acre permit area. The permit area generally lies south of Highway 133 and
north of the Minnesota Creek drainage divide.
B-seam Mtne Plan
In April, 1989, the applicant applied to the Division and received approval to
oegtn mining in the 8-seam. Approval of the revision was granted July 12,
1989. Access to the B-seam will oe accomplished through the construction of
two north-south ramps, and a ventilation shaft in the SW 114 of Section 21,
T13S, R90W from the F-seam to the 8-seam, 390' below. Initially, room ana
pillar mining will oe performed with a continuous miner. This work will De
done in a manner to develop panels for later removal using longwall methods,
and to produce as much as 1.4 million tons Der year. This revision aoes not
entail any aaaitional surface disturoance since ali access and ventilation
facilities will De contained within the F-seam workings. The permit area has
been increased, However, by 35.5 acres to accommoaate the B-seam mine main
access entries.
Long-range plans propose mining of the intervening E-seam south of the ramps,
following extraction of the B-seam. The E-seam lies 180-200 feet below the
F-seam and 200 feet above the B-seam. The 1989 mine plan permitting action
covered the B-seam exclusively.
Once the access ramps and ventilation shaft has been completed the B-seam main
will oe driven to the west. Bleeder entries will be driven to the north ana
then west to define the mining blocK ana 8 panels. These panels would then be
extracted oy a retreating longwall. This olock is anticipated to oe mined out
. oy 19 y9. See Exnioit 3.4.A.1.
215 Centennial Building, 1313 Sherman Strset Denver, Colorado 80203-2273 Ts1.13031 8663567