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{~ • <br />I:4IIdIIJG PLAN EXHIBIT D <br />(a) and (b) lNhere sufficient soil materials are present, they <br />2 <br />are handled separately to storage or direct for later grading <br />of existing piled overburden. The Smoky Hill limestone is <br />blasted to leave a 36' to 42' lovrer bench, then loaded by <br />shovel or front end loader on quarry trucks for hauling 93 <br />to 95 percent as overburden with the balance b u ng crushed <br />as low lime material. The 36 to 42 feet of remaining lime- <br />stone has been blasted as one bench and hauled to the crusher. <br />A recent change now removes this remaining limestone in tc~o <br />benches because of increased production of special cements. <br />Since Plant No. 3 'rent on line in 1975, unpredictable <br />factors have prevented advance quarry stripping towards <br />development of an improved mining plan. A separate quarry <br />location for special cement limestone is Hoer being discussed. <br />The developing quarry plan provides for a 500-600 foot Bride <br />quarry strip to progress northward just west of the fault <br />zone marked on map pcc-1353 (sheet 6). An additional 3 <br />similar strips would then deplete the deposit westward to <br />the gas line evith overburden from each strip going into the <br />previously quarried strip. Operation of this plan Trill re- ,' <br />quire an alternate quarry area probably on the limestone ~ <br />face east of the secondary crusher.) The alternate quarry <br />area would be operated between the completion of one of the <br />n <br />LJ <br />500-G00 foot strips and the start of quarrying on the second <br />strip in order to allo~.~ a good start on overburden. removal <br />from the second strip. Full implementation o£ this plan <br />requires a higher rate of stripping which depends upon de- <br />livery of equipment scheduled to start in iJo~~ember 19'1'1. <br />