PERMFILE104127

• Permit No: C1984065A
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Section_Exhibit Name: 4.0 Exhibit and Figures
• Media Type: D
• Archive: Yes

THE NORWEST GROUT'
®®~ ®~
• Nonvcst
Resource
Consultants. lnc.
Swte 200
2470 South Main Street
Salt Lake City. Utah 89175
(&011466-9645
September 10, 1990
Mr. E. Peter Matthies, President
NEW CASTLE ENERGY CORPORATION
7476 East Arkansas Ave. #104
Denver, Colorado 80231-2562
Subject: Surface Preparation Facilities
for is nderground Hydraulic Mine
Confirming our telephone conversation of
(drawing number 1302-SC-001) selected for your
All the fine coal below 100 mesh in size will pass
the above date, the process flowsheet
mine product is a "closed loop system."
to the thickener for concentration.
The thickened underflow will be pumped to the belt presses for further dewatering
and the press cake will be discharged on to the coal collection conveyor. The water
overflowing the thickener will be of sufflcient clarity for re-use within your facility. Hence
your coal dewatering system will only have two products, coal to be transported to market
and water which will be re-cycled.
NCEC will of course have to provide the normal system of run-off collection ditches
with a sediment pond around the facility to contain any stockpile and area run-offs.
The emergency flume bypass settlement basin if used, will have an adjustable decant
overflow to the sediment pond. Solids from the basin will be reclaimed by front end loader
and discharged into the dewatering plant. Any "black water" in the sediment pond will also
be re-processed by pumping to the dewatering facility.
If you have any more questions please feel free to call, I will be happy to assist you
whilst Messrs. Symonds and Moizer are away from the office.
Sincerely,
NORWEST RESOURCE CONSULTANTS, INC.
~lu-G~.~ G(^,~
David Bingham l .~
Senior Engineer
• DB/jm
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