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October 1987 <br />Operating Procedures for <br />Proper Compaction of the <br />New Elk Prep Plant Refuse Material <br />The following procedures are to be used in compacting the New Elk <br />refuse material. Compaction testing has indicated that these <br />methods will provide a minimum of 909 of dry density per A5TM <br />D-698-C specifications. It is important to review these <br />procedures in the event that the consistency of the refuse <br />material changes substantially from what is currently being <br />discharged from the plant or if subsequent testing shows that we <br />are not getting 908. <br />A 980 rubber tire loader should be used to load, haul and <br />dump (LHD) the material stockpiled on the head end of the <br />refuse belt. The material dumped by the 980 should then be <br />spread out using the 963 loader so that the maximum lift <br />thickness is 12 inches. <br />During the LHD sequencing a majority of the refuse area will <br />be compacted. The areas near the face and side collection <br />ditches, however, will not receive a large amount of rolling <br />and should be specifically rolled with the 980 loader with a <br />full load in the bucket. <br /> <br />It is important that a lift is dry and compacted before <br />laying the next lift down. Areas which are wet should be <br />rescarified and compacted as necessary. <br />• <br />