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<br />TABLE 4-3
<br />ESTIMATED PRODUCTION RATE
<br />(TONS OF RAW COAL)
<br />
<br />1991 1,130,000 - 1,130,000
<br />1992 1,130,000 - 1,130,000
<br />1993 1,260,000 - 1,260,000
<br />1994 1,260,000 - 1,260,000
<br />1995 1,260,000 - 1,260,000
<br />1996-2000 ,300,000 - ,300,000
<br />..001-2005 ,224,228 75,772 ,300,000
<br />006-2010 ,566,219 1,733,781 ,300,000
<br />..011-2015 - ,300,000 ,300,000
<br />.,016-2020 - ,300,000 ,300,000
<br />021-2025 - ,300,000 ,300,000
<br />026-2030 - ,300,000 ,300,000
<br />031-2032 - 1,544,799 1,544,799
<br />4.2.7 Recovery Factors Recovery factors vary among different main and gate roads, room-and-pillaz
<br />panels and longwall panels.
<br />Only 36 to 39 percent of coal is recovered from the main or gate roads depending upon the numbers
<br />of entries being developed. The higher the number of entries, the lower the recovery factor will be.
<br />A three-entry gate road renders to a 39 percent recovery factor. This factor is 36 percent for a
<br />six-entry main road.
<br />In the room-and-pillaz panels, the final recovery, i.e. the ultimate pillaz size that can be safely
<br />extracted, depends upon the overburden thickness and the seam thickness. The recovery factor decreases
<br />with increasing overburden and/or seam thickness. In the Deserado Mine, this factor is estimated at 64
<br />percent.
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