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MINING PLAN <br />Exhibit D -AMENDMENT 3 <br />Mining Plan <br />(This is a complete rewrite and revision of Amendment l and Amendment 2) <br />STATEMENT OF APPLICABILITY OF THIS PLAN <br />This exhibit is designed to completely replace all prior mining plans for [his site. The exhibit <br />presents the mining plan for changes in Phase 1 plus the plans included in Amendment 2, which added a <br />small parcel to Phase 1, as well as plans for [he new Phase 2 area. This mining plan is a complete redesign <br />of the operation and is the only valid mining plan for this site. Although some aspects of the original <br />plans have been carried over in an unaltered form, the continuation of those aspects occurs only because <br />they still work in [he new plan. <br />Unique Term Definitions: <br />Groundwater Barrier Wall: In this plan this term applies to a barrier installed around al] or a part of <br />the area to be mined that prevents or greatly reduces the flow of <br />groundwater into the area during mining. In this plan it specifically refers <br />to either a "slurry wall" or a "driven sheet piling steel wall." In some <br />cases, specific actions differ with regard to the type of wall. In those <br />cases, [he actual type of wall is stated rather than [his inclusive term. <br />~~4 P°'sa r~----y <br />a ~•' 4 <br />tifilV 1 ~ l~~l <br />Mining anG Ssf~iy <br />Pueblo East Pit Amendment 3 (2007) Exhibit D Page 1 of 34 <br />