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Bench 1 overburden is dug by the truck - shovel and loaded into the dump trucks to be transported <br />to the backfill area. Bench 2 overburden below Bench 1 is cast blasted into the empty adjacent pit. <br />Dozers are used to push some of the blasted material into the empty pit from the blast area <br />following a cast blast. Any remaining Bench 2 above the coal is stripped and transported via truck - <br />shovel and dump truck to the empty pit. areas. <br />From the 1998 soil survey, the Bench 1 suitable material is differentiated from the bottom of Lift <br />B (which is the C soil horizon) by greater percentage of coarse fragments. <br />Revised September 2010 (PR 06) 2.04.9 -40 <br />