2017-06-27_REVISION - M1977227 - Laserfiche WebLink

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Request for Technical Revision Permit M-1977-227 Mesita Hill Mine Exhibit D, Mining Plan — Revised for Phased Mining There are several distinct products produced at this site, which are excavated in different parks of the permit. There are also numerous small existing pits in the permit. Many of these small pits will not be redisturbed by mining, but will be reclaimed as mining proceeds in adjacent mining phases. Super -Ex wishes to delineate the areas to be mined into a series of approximately ten -acre phases, which will be mined and reclaimed in an orderly succession across the site. Activity in each mining phase will commence with stripping any usable topsoil or overburden (unless those material were formerly removed by previous mining). There are currently areas that are in a condition to receive overburden and topsoil in final reclamation. Super -Ex believes it is preferable to move and place overburden and topsoil directly onto these reclamation areas, rather than stockpile them and place them later. No new topsoil stockpiles, therefore, will be created during the mining phases. After a phase has been fully mined, reclamation will begin there and be carried to completion within five years. When mining ceases and reclamation begins on a phase, mining will begin on another mining phase. Due to the variability of materials being mined, there will be two mining phases being actively mined at a time. The operator will limit mining disturbance to no more than two mining phases at a time. Besides the mining phases, whose disturbance will be only temporary, there are several other areas of activity on the site that will be remain active and/or unreclaimed for a longer period of time, or until all mining ceases on the site. These areas include: onsite haul roads, the large central pit (which may require a longer time to backfill), the processing and product stockpiles area, topsoil/overburden stockpile areas, concrete storage bins and concrete slab (equipment storage or temporary structure). These non -mining phase areas encompass approximately 20 acres, and all disturbance will be sur ficial. These various areas are shown on the enclosed maps. The processing and stockpiling area will remain in the central part of the permit, south of the large pit. This allows close access to mine the different products, as well as close access to the group of areas to backfill and reclaim. The operator expects to have dozers and loaders, conveyor/stackers, and screens. Numerous product stockpiles will be present continuously on the site.