APPCOR11992

• Permit No: C1981038
• IBM Index Class Name: Application Correspondence
• Media Type: D
• Archive: No

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August.25, 1980
Memorandum
To: Office cif Surface Mining, Denver, Colorado
Prom: Arc:) Plining Supervisor, CRP1A
Subject: Colorado Westmoreland, Inc., Orchard Valley Nina, Ptinor
Modification of Approved Mining Plan, dated June 26, 1980
In June, 1980, Cu]orado Wcsuunrcland, Inc. (CWI) encountered a fault,
with a 47 Coot displacement, nt Crosscut 36-37 of the Eight Nortl)
Main Entries. Lt is ^nt.icipated that the Left North Mains will reach
the fault at Crosscuts 39-40.
Tha mine plan, as approved by the Office of Surface Mining, grants
the right to advaucu to Crosscut 48 in the Right North Mains, to advance
[u Crosscut 38 in the Left Plains, to mine the Pifth and Sixth Gast Panels
and [o develop the Seventh East Mains. CIJI proposes a plan modification
that would adv:mce all the North Main entries safely through the fault
in order cn connect the two ports of the coal hed. These entries would
ha inclined, throul;h ruck, aL a slope sui[ab]e Cur the conveyor belt.
'fo enahlc CIJi to mina an equivalent tonnage safely, they request that
part of tha tonnage approved Cor mining Sixth East be placed on the left
s~idu of the North htn~ins. An additional E1Ve crosscuts,~to Crosscut 43
in the Loft Mains, are needed Co pass through the fault. Coal tonnage
in the additional area is lass than that lost as a result of coal seam
displacement in Sixth fast.
In order fur C'.J1 to mine safely [h rough this major fault, and to main-
tain [hair current prnductiun rate, approval of the Plining Plan Modifi-
cation is reconm~endud.
John T. Skinner
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