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A specialized blasting technique commonly called blast casting will be <br />• utilized in conjunction with dragline operations to reduce the dragline <br />bench height and minimize dragline material handling requirements. With <br />blast casting, the overburden shot is designed to cast the material across <br />the pit, thereby lowering the elevation of the dragline bench. This <br />practice is currently in use at Colorado Yampa Coal Company and has proven <br />to be both safe and cost effective. <br />The dragline will then be positioned on the spoil side of the cut and <br />essentially build its own bench as it progresses through each cut. <br />Once the overburden has been removed, the top of the coal seam will be <br />cleaned with a rubber tired dozer, then drilled and blasted. <br />The blasted coal will be loaded into end-dump haul trucks with either a <br />front-end loader or a hydraulic shovel, and transported to the tipple. <br />For details of blasting procedures see page 780-44-1. <br /> <br />Backfilling and regrading, topsoiling, revegetation, and soil stabilization <br />practices are detailed in appropriate sections (see pages 780-111-1, <br />780-107-1, 780-117-1 and 780-129-1, respectively). <br />Equipment <br />A list of the major equipment which is typically utilized for the mining and <br />reclamation activities is presented below: <br />OVERBURDEN REMOVAL <br />E UIPMENT <br />Dragline <br />• <br />TR 90-29 <br />TYPE <br />Marion 8050 <br />Permit Renewal 780-1-3(a) <br />Revised 03/09/90 <br />