REV92376

• Permit No: C1980007
• IBM Index Class Name: Revision
• Doc Date: 7/26/1989
• Doc Name: MT GUNNISON 1 MINE TR 55 FN C-80-007
• From: MLRD
• To: OSM
• Type & Sequence: TR55
• Media Type: D
• Archive: No

STATE OF COLOI~IIIIIIIIIIIII III

Roy Romer, Govei
DEPARTMENT OF NATURAL RESOURCES
MINED LAND RECLAMATION DIVISION
FRED R. BANTA, Dir~etor
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. 1 Mine, TR 55, File C-80-007
Dear Mr. Maxwell:
Foilowing is a summary of the B-seam revision and otner 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 Mine Plan
In April, 1989, the applicant applied to the Division and received approval to
oegin mining in the B-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 1/4 of Section 21,
T13S, R90W from the F-seam to the B-seam, 390' below. Initially, room and
pill-ar mining will be performed with a continuous miner. This work will be
done in a manner to develop panels for later removal using longwall methods,
and to produce as much as 1.4 million tons per year. This revision does not
entail any additional surface disturoance since all access and ventilation
fac11it1es wi'Il be contained within the F-seam workings. The permit area has
been increased, However, by 35.5 acres to accommodate 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. Tne 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
w111 be driven to the west. Bleeder entries will be driven to the north and
then west to define the mining block antl 8 panels. These panels would then be
extracted by a retreating longwali. This block is anticipated to be mined out
by 1999. See Exnibit 3.4.A.I.
215 Centennial Building, 1313 Sherman Street Denver, Colorado 80203-2273 Tel. [phone]