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Open Pit Rock Dumps <br /> Although rock dumps at the Climax Mine are described as contain- <br /> ing rock overburden material , in reality, they are piles of <br /> mixed low grade molybdenite ores which in the far future may <br /> have value as a marketable resource. However, for the present <br /> and near future , these stockpiles will be referred to and <br /> treated as rock overburden dumps. <br /> Two rock dumps presently are established at the mine: McNulty <br /> dump and the "E" dump. The McNulty dump and its use generally <br /> is unchanged from the description in the existing permit. The <br /> "E" dump, however, has been changed from the "low grade stock- <br /> pile" as described in the existing permit. This ore stockpile <br /> will be considered a rock overburden dump presently and in the <br /> forseeable future. <br /> Both the McNulty dump and the "E" dump are considered part of <br /> the active operating areas of the mine. The "E" dump is the <br /> most "active" of the two because of the shorter haul distances <br /> to and from various points on the Climax property. Rock which <br /> will be used to stabilize tailing dam faces and flats (Exhibit E <br /> • - Reclamation Plan) will be obtained from the "E" dump and the <br /> open pit as opposed to the McNulty dump. Present planning <br /> indicates that additional expansion of the McNulty dump, <br /> although possible, is unlikely. <br /> Operation of the open pit under any scenario will entail the <br /> addition and use of a third, small rock dump (OP dump) . This <br /> dump will be located adjacent to the open pit between the pit <br /> and the mill on land already affected by the mine/mill complex <br /> ( and included within the affected acreage for that area ) . <br /> Construction of this dump will necessitate dismantling and <br /> demolition of several mine/mill complex buildings. As with the <br /> McNulty and "E" dumps, the new dump will be designed and engi- <br /> neered for stability and diversion of runoff using best accept- <br /> able engineering and technology. <br /> D-3 <br />