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.ruarr.unryr .CWi.YQ'-i.fr•'.d:~•i.t:i..r ~~1, ~ ~ ~ I ~`t '~."X.YiW. NF~'~ ' .~. L:_{ i+:-.~~J~.-.iii ~ ~ l.t~~~:~ ~._.L1~~i~_~ay'1 /~ ~ r Page ? The major gcol.os•,i.c ha;:auls ~,~bich may be cncountcrcd arc t}~e release of methane f:roin Chr_ coal, ^nd inane inscabilicv, iI scams below arc mined before production from the "II" scvn has been compacted. No ground water has been encaunr r_r ed at the Blue Ribbon Pl in e, and none is e>:p ected to be encounccrcd on the Pedcra.l sublease. The other mineral resources that arc known to exist in the area of the proposed mine plan are the A, B, C, ,and D coal seams of. the Somerset Coal Pield. All of these can be commercially mined on sublease C-033301 and may be included i.n future modifications oL the mine plan if lease rights are acquired by Sunflower Energy Corporation. One drill hole was made on sublease C-033301 to test coal and hydrologic conditions. P:o ground water wus encountered in t}~is drill hole. Description of Annl.ic an c's Proposal Coal will be mined from the lease tract by room and pillar methods using a continuous mining machine. The tract ~.aill be developed via four main entries, 18 Leet wide on 80 foot centers with cross cuts 18 feet wide on 80 foot centers that ~:~ill divide the tract into two equal parts. A total of six panr_ls will be developed (on the advance) with ].8 foot wide entries and rooms and crosscuts on 80 foot centers ].caving 60 fuot square pillars. llsi.ng secundacy methods, these pillars will be n;ined during retreat to leave a configuration of 8 foot square pillars on 28 foot centers. Sixty foot barrier pillars will. be left on the east, west, and north sides of Lhc lease tract. 140 foot barrier pillars will separate production areas from the main entries. A 150 foot barrier pillar will separate production areas from the main entries on adjacent fee land to Che south of the lease tract. between production panels, 60 foot barrier pillars will be left. The rate of production from the Blue Ribbon Minc has been variable, reach- ing 89,373 cons in 1979, and 8v,485 tons from January through October 1980. Production is estimated to increase to a ma:;imum of 150,000 tons/year by 1981 at which level the present coal reserves will he depleted in 1984. The company projects t}~e recovery rate to be 92 percent within production panels and 70 percent fur the lease tract. Coal will be carried from the mine 67 conveyor, stoc}: piled, and then screened before loading into trucks for shipment. ,1 list of major mining equipment follows: Lee Norse Continuous Miner Eimco Load-Haul Una[ Belt conveyor for coal haulage from mine Roof bolter Caterpillar 500 f;41 Generator Euclid Front End Loader Fairbanks-P1orse Portable Truck Scale No subsidence has been observed over active portions of the Blue Ribbon Plane. Due to the resistant, competent rocks above the "E" seam, no