Laserfiche WebLink
ti <br />h <br />Seneca Coal Company Highwall Mining Addendum <br />MSHA I.D. OS-00304 March 1.2004 <br />• Additional Equipment Required <br />A. Equipment List with Manufacturer <br />One Launch Vehicle manufactured by Superior Highwal] Miners, LP. <br />Minimum of 38push-beams, manufactured by Superior Highwall Miners, LP <br />One Stacker Conveyor <br />One ] 4CM 15 Continuous Miner manufactured by Joy Mining Machinery <br />One Spare low profile head manufactured by Superior Highwall Miners, LP <br />One Water Tanker <br />Fork/Whee] Loader manufactured by Caterpillar <br />2300kW Transformer <br />B. Equipment Dimensions <br />Launch Vehicle - 25 ft wide and 72 ft long <br />Push-beams - 6.9 ft wide by 19.8 ft long <br />Geoloeic Information <br />A. The tazget Wolf Creek, Sage Creek, and Wadge seams at the Seneca Mine occur in late <br />cretaceous sediments of the Williams Fork Formation of the Mesa Verde Group. The <br />• sediments consist primarily of sandstone interbedded with shales, siltstones, and coal. <br />Dips in the Seneca IIW Area typically are in the 10° to 20° range, while in the Yoast <br />Area, dips are between 10° to 17°. In both areas, dips aze to the west-northwest. <br />Multiple seam mining may be practiced. <br />B. Table ]summarizes the physical characteristics of the various coal seams and areas <br />planned for highwall mining: <br />Table ] - Coa] Seam Physical Characteristics <br />r1 <br />LJ <br /> Pazameter Minimum, ft Maximum, ft <br />Seneca IIW Wad e cover 80 380 <br /> Wadge thickness 7 13 <br /> Wad e-Sa e Creek interburden n/a n/a <br /> Sage Creek cover 0 280 <br /> Sa a Creek thickness 3 6 <br /> Sage Creek-Wolf Creek interburden 0 120 <br /> Wolf Creek cover 0 440 <br /> Wolf Creek thickness 12 25 <br /> ~ <br />Yoast Wad e <br />cover 60 460 <br /> Wadge thickness 8 15 <br /> Wadge-Wolf Creek interburden 160 220 <br /> Wolf Creek cover 0 280 <br /> Wolf Creek thickness 6 19 <br />A map showing the various areas is given in Exhibit 1. <br />