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Maximum P.oanomic Recovery tte~part <br />Jumbo Mountain Tract <br />Pg,Z <br />STRATICIRAI~HY - i~ttt'd. <br />]jaggy&y~ This coal seam averages 14.5 ft. thick, and has some areas of high <br />sulphur. The upper B-seam and lower &seam merge in the eastern K of the tract whore <br />the, average thickness is as high at 20 ft. The split separates the ttpper.atrd lows B-seun <br />trending west, and the lower &seam is consistently high esh which precludes economic <br />ra:overy of that split. Ito average location it about 40 fact above the Rollins sandstone <br />and it ranges from 35 to 60 fat below the C-seam. The recoverable reserves for thus <br />sewn mti calcrdated to be: 10,044,000 tans. <br />Overburdtat on the tract ranges from 0 ft. to 1100 it. The method of mining which Mowtain <br />Coal Company (MCC) proposes to employ on the tract has been established as a method of <br />extraction in federal coal reserves to the east of the proposed tract and the known recavay <br />ratio's establislhed there are ptrojtxted for the proposed tract. (ace ESTTMATF,.D RLCOVI°R'r <br />below) <br />MININt3 'MEITiOD -The depth of the coal dictatd that underground raining ads tut be <br />employed. Since MCC hat already invested is lougwall egttipmeot, they use the <br />retreating longwall method of mining. with the anticipated production level loos •~ook <br />per year, the n:serve can bat be extrat:ted by the longwall minirtg method taking R <br />wide by 5000 Io 8000 foot long blocb wing a Joy shearer, Aeimtchddt thielda, and Weal9<Ha <br />/.,,~.,pattiine. It would be necessary to develop entries, x~vts, and pillars for aaras to the longovaln <br />(('"~~ blacks. This wrould be acCOmplittted by wring oontinuow miners, shuttle cars, and roof boltau. <br />Q.D <br />PRODUCTIOIQ St..HB,b - It is antidpated that production would commence oa the tncx <br />within the first six man after lease issuance if MCC it the autxeasful bidder. The production <br />rate would be ribout million tons 'year. Mining on the tract should be completed in about <br />S years (allowing that some of tho ,~%mii. tons per year praduct;on would came froth aq~aaru <br />coal leases whige mining It in pmgr~ss on the proposed tract). <br />0 <br />laQu>PMErIT <br />~~ ~P~ <br />2 Toy ;Shearers 125 Ideimtacheidt Shields <br />1 Wes!tfalia ~ Boa 1 weatfalia Stage IAader <br />development Equipment: <br />~ 3 Continuous Minus ~- ~' Roof Bolters <br />tt? Shuttle Cars ~? Faoder Breakeo <br />7 1R Power Centers 8 Sump Pumps <br />12 Fora: Fans tcY ~"Comeyor Bdt System <br />6 Utility Vehicles 4 Utility I-oatdera <br />t ~ Maim Mine Fans 1 Rand Grader <br />4 3 Lubt: Truck 1 Timber Truck <br />,~ . <br />