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Mica Lode, Permit M-1977-144,Technical Revision <br /> Exhibit D—Mining Plan <br /> General Mining Plan specifications: <br /> 1. Mining will be carried out so as to create stable slopes (i.e., 2.5H:1V or gentler) or benched <br /> highwalls,wherever possible. <br /> 2. Backfilling depressions with reject materials generated onsite, and surface grading of emplaced <br /> backfill materials,will be carried out concurrent to mining activities in the permit. <br /> 3. Extraction and backfilling will proceed in an orderly manner throughout the mining phases,and <br /> be carried out in the manner of incremental concurrent reclamation, in order to reduce the <br /> amount of required post-mining grading and shaping. <br /> 4. Topsoil will be salvaged wherever possible,and protected for later use in reclamation. Topsoil is <br /> thin to non-existent in many areas of this permit, so every effort will be made to also salvage <br /> and utilize appropriate subsoil,overburden and fine material as growth media. <br /> 5. Stripping soil and vegetation in advance of mining will proceed carefully and in a limited <br /> manner,to minimize overall surface disturbance. Wherever possible, woody materials from <br /> trees and shrubs that are stripped will be stockpiled to be spread later during final reclamation. <br /> 6. At any point during the life of the mine, any areas of the permit which will not be further <br /> disturbed will be scheduled for final reclamation (e.g.,grading, soil,seeding) in a timely manner. <br /> 7. Any area of the permit will be deemed ready for final reclamation when: its slopes or benches <br /> meet the specifications above, all stockpiles of saleable materials have been removed, <br /> processing equipment and/or structures have been removed,all explosives and/or fuel <br /> materials in said area have been removed, and backfill materials have been adequately <br /> emplaced. <br /> 8. The permit will be regularly monitored to control noxious weeds and contain/remove <br /> contaminants. <br /> Mining plan details of the individual affected areas of the permit. <br /> For clarity, naming of the individual areas in this revision mostly conforms to the names previously used <br /> in permit documents. Please refer to the Mine Plan Map in Exhibit C, which complements the <br /> descriptions contained below. <br /> Ruby Pit <br /> Area: 6.12 acres. <br /> This is an active pit in the NE part of the permit. The acreage of this area has been expanded under this <br /> revision to allow future extraction. Mining will continue in this pit,toward the south,west,and east. <br /> Depending on quality and market for the mined materials that are encountered as the pit floor is <br /> deepened,this pit may be developed as a pond. If it becomes a pond, slopes will be created to comply <br /> with Rule 3.1.5(7). The pond surface will be 1.0 acre or less. <br /> All work as described in mine plan requires removing saleable product.We intend to initially finish laying <br /> back the west wall,then extract from the south and east walls. <br /> All mining is done in such a manner as to reduce the highwall gradient. This will be complete when all <br /> slopes have been mined to 3:1 and the east end of the pit floor meets the (permanent) Road 383B at the <br /> same approximate elevation. As part of slope reduction,there may be limited amounts of oversize <br /> materials backfilled in the pit and covered during reclamation. <br /> No mining is planned for the portion of this area located east of Road 383B. <br />