PERMFILE66574

• Permit No: C1981016
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Doc Name: Underground Disposal plans
• Section_Exhibit Name: APPENDIX A THRU C
• Media Type: D
• Archive: No

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REVISED PROGRAM PLAN
Mine
with the issuance of this report, this task has been
completed.
Physical and Chemical Characteristics of Coal Waste
The flow rates of the coarse refuse in ton/hr and the fine
refuse in gal/min and percent solids have been determined during
the initial HNM visit and are presented at the end of the section
on conceptual design. These rates, however, will have to be re-
evaluated after the HNM, presently a room-and-pillar operation,
introduces a longwall operation in the near future.
Representative samples of the waste products taken at the
mine wash plant will be analyzed by private laboratories (Lerch
Bros., Hibbings, MN, Pennsylvania Crusher, Broomall, PA) for
particle size distribution and minerology. The coarse solids
compressive strength and wear properties as indicated by a silica
index will also be determined.
The coarse refuse top size is presently 5 to 6 in. and will
have to be reduced to a 2 in. top size for slurry transport.
Samples of the waste materials will be shipped to crushing
laboratories (Pennsylvania Crusher and Rexnord) to determine the
most efficient crushing mechanism for producing the desired top
size with minimal fines generation.
Pipeline Pressure Loss Testing
Slurry Pressure loss data through pipelines will be measured
for both the coarse and fine refuse. This will permit accurate
selection of the appropriate slurry pumps.
The coarse solids (+14 mesh) transport line pressure loss
data will be determined on a 300 ft long 6 in. ID steel pipeline
being installed at the FMA coarse slurry transport facility. The
line pressure loss data will be determined for the anticipated
coarse refuse flow rate of 87 ton/hr at various line velocities.
Additional solids rates and slurry concentrations will also be
evaluated.
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