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The plug may be lifted up a maximwa distance of 3 feet fran <br />the raise bore hole to allow for mucking, but the plug will be <br />designed so that an employees can not fall into the hole while <br />it is raised. The only time the employees will be off of the <br />lower work deck will be to drill the next shot holes and <br />during this time the plug will be fully loxered and the <br />employees will be attached to the lower deck with safety <br />lanyards . <br />During the excavation, the shaft bottom will contain cuttings <br />to be removed by permissible diesel scoops or permissible <br />continuous miner and permissible haulage units. The minimum <br />distance from the vertical shaft wall to the operator will be <br />B-feet. This will prevent the borehole from becoming muck <br />bound and eliminate the operator from exposure to falling <br />cuttings. The cuttings will not be allowed to accumulate in <br />the shaft bottom. The cuttings will be removed from the mine <br />or permanently stored in crosscuts near the shaft site. No <br />combustible (coal) will be stockpiled underground, To prevent <br />interrupting ventilation in the shaft bottom or other areas, <br />the muck will not be allowed to roof out, unless in a <br />crosscut. <br />Shaft Lining: <br />The lining phase will be concurrent with the shaft sinking. In <br />order to protect employees from exposure to falling objects or <br />rock from the shaft wall, the shaft wall will be lined to a <br />point where no employee will be greater than fifteen feet <br />below this lining. This provision will not apply in the <br />initial shaft collar development which will be a trackhoe <br />excavation and poured upwards for the sides and shaft base. <br />Supplemental Support ( Optional): <br />The approaches to the shaft will be supported with fully <br />grouted 6-foot resin roof bolts on 5-foot centers. If air <br />sweeps are used, they will be bolted with 6-foot resin roof <br />bolts on 4-foot centers, with wire mesh and covered with a <br />minimum of 6 inches of shotcrete. If conditions require <br />additional support in the shaft approaches, it will consist of <br />metal cross beams set on metal legs in accordance with the <br />approved roof control plan. <br /> <br />_,.. <br />APPROVED CMS & H ~~~ ~ R 2 x'95 <br />2 <br /> <br />