PERMFILE114812 - Laserfiche WebLink

Home Browse Search

Seneca Coal Company MSHA LD. OS-00304 Additional Equipment Required A. Equipment List with Manufacturer Highwall Mining Addendum March 1, 2004 One Launch Vehicle manufactured by Superior Highwall Miners, LP. Minimum of 38push-beams, manufactured by Superior Highwall Miners, LP One Stacker Conveyor One 14CM15 Continuous Miner manufactured by Joy Mining Machinery One Spare low profile head manufactured by Superior Highwall Miners, LP One Water Tanker Fork/Wheel Loader manufactured by Caterpillar 2300kW Transformer B. Equipment Dimensions Launch Vehicle - 25 ft wide and 72 ft long Push-beams - 6.9 ft wide by 19.8 ft long r~ U Geologic Information A. The target Wolf Creek, Sage Creek, and Wadge seams at the Seneca Mine occur in late cretaceous sediments of the Williams Fork Formation of the Mesa Verde Group. The sediments consist primarily of sandstone interbedded with shales, siltstones, and coal. Dips in the Seneca IIW Area typically are in the 10° to 20° range, while in the Yoast Area, dips aze between 10° to 17°. In both areas, dips are to the west-northwest. Multiple seam mining may be practiced. B. Table 1 summarizes the physical characteristics of the various coal seams and azeas planned for hghwall mining: Table 1 -Coal Seam Physical Characteristics • Parameter Minimum, ft Maximum, ft Seneca IIW Wadge cover 80 380 Wadge thickness 7 13 Wadge-Sage Creek interburden n/a n/a Sage Creek cover 0 280 Sage Creek thickness 3 6 Sage Creek-Wolf Creek interburden 0 120 Wolf Creek cover 0 440 Wolf Creek thickness 12 25 Yoast Wadge cover 60 460 Wadge thickness 8 15 Wadge-Wolf Creek interburden 160 220 Wolf Creek cover 0 280 Wolf Creek thickness 6 19 A map showing the various areas is given in Exhibit 1.