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<br />t <br /> starts. The topsoil previously stockpiled in Stage 4 will be <br />' used to reclaim areas mined previously. <br /> When mining is complete in Stage 5, only what is left of <br />' Stages 2 and 6 will remain to be mined. <br />' The mining operation will continue year-round on a demand <br /> basis. When clay or sand is required by the brick plants, the <br />' material will be removed from the stockpiles at the mine. As the <br /> stockpiles are reduced, new stockpiles will be crea ted with mined <br />' materials. <br />' The clays to be mined lie in almost vertical s trata (70 to 80 <br /> degrees from horizontal) which are interbedded with sands. Large <br />' volumes of sand in the clay will make the material unsuitable for <br /> the manufacture of brick. The majority of the unsu itable sands <br />' will be excavated and stockpiled or will be used to reclaim the <br /> area mined previously. Approximately 40 percent of the pit <br />' <br /> volume is expected to produce waste sands. <br />' After topsoil and overburden are removed, the clay will be <br />mined and stockpiled. On-site equipment may include, but is not <br />' limited to, dozers, scrapers, backhoes, front-end loaders, dump <br />' trucks and a water trailer. <br />The main source of water in the mining areas is expected to <br /> come from minor runoffs. In the pits being mined now it has been <br /> noted that water from runoff generally percolates through the <br />' sand leaving the pits fairly dry. Runoff through Stages 1 and 3 <br /> will be minor and drainage will present no problem. Stages 2, 4 <br />' d 5 h <br />li <br />htl <br />t <br />d <br />i D <br />i <br />i <br />i <br /> an may <br />ave s <br />g <br />y grea <br />er <br />ra <br />nage courses. ng m <br />n <br />ur <br />ng, <br /> these courses will be diverted as needed to isolate the mined <br />' 12 <br />