_GENERAL DOCUMENTS - C1981017 ‎(222)‎

• Permit No: C1981017
• IBM Index Class Name: GENERAL DOCUMENTS
• Doc Name: Bid Documents ‎(IMP)‎
• Permit Index Doc Type: General Correspondence
• Media Type: D
• Archive: No

Chapter II
Coal Basin is an avalanche prone area. Heavy snows, steep
gullies and cliffed slopes encourage the development of
unstable snow.
the roads were mostly constructed in cuts using the sidecast
method. Fills were mostly used as a means of disposing of
material from the cut.
( .2 ) Present Usage
The adit/rock tunnel which extends to the workings of Mines #1 and
#2 has been operational since 1987 , and is the primary
transportation corridor to the working areas of these mines.
Mines #3 , #4 and #5 are presently idle. The current usage of roads
to these portals, namely Roads C, E, F and G is light use, and
these roads are presently designated light use roads. However,
unmined coal reserves remain in the underground workings accessed
by these portals, and Mid-Continent reserves the right to resume
future operations as market conditions warrant. In that case, road
A, B, C, E, F, G would potentially be used as coal haulage roads.
Plans for in-place de-gassification of the coal reserves anticipate
use of the No. 4 portal area, and the road from that portal over to
the back side of Huntsman Ridge (currently used to provide access
for subsidence monitoring) for access to the area above the coal
and to transport drilling equipment, etc. The portal area would
probably be used as a staging area for the de-gas program.
During the fall of 1991 , Mid-Continent began a program of clean-up
of the surface areas of the mine, including the portal areas. This
involved removal of scrap metal , and metal structures which are no
longer needed for the mining operation, or which have been damaged
by the elements. Front end loaders were used extensively in the
clean-up, and the metal was transported from the mine site by
trucks, including a large semi-trailer truck.
Reclamation of the portals will entail removal of equipment and
other large structures, which will require transport of large
equipment and access by large sized trucks. Heavy equipment will
be transported to the portal areas for backfill and grading.
Mines #1 and #2 portal areas are important to the support of the
underground operations accessed by the tunnel . The entries at
these portals provide escapeways and alternate means of access to
the underground workings, and installations which provide for roof
support and ventilation are situated here. Rock dust and packwall
aggregate (used for roof support) are regularly delivered to these
portal areas. Roads A, B and D have a current use as access roads.
18 Revised 12/91