2021-08-31_REVISION - M2017007 - Laserfiche WebLink

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MINING PLAN EXHIBrr D(coNT) setbacks on the East, South & West will still be 25 feet, but the Perrino House Area and School House Area will be removed. The mine floor will slope towards the north to preserve the existing flow characteristics of land. Typically mining at Colorado Crushing' s, mining operations are done in cycles . These cycles involve moving a crushing plant into a mine and beginning to process material until there is a six month to 1 year supply of rock stockpiled. Once an adequate supply is processed, the crusher and equipment are moved to another mine. The stockpiles will be used throughout the year by the company. As mining ends on a section of the working face it is temporally graded to 2 : 1 so it is stable when there are no activities in the mine. Any resciling and revegetation needed is completed when the area where material is removed will not be redisturbed. This cycle continues until the mine is played out . Each time the mine is re-enter mining begins by setting up the plant and stripping the area to be mined during this cycle. The topsoil and overburden will be stockpiled along the mine perimeter setbacks or on the mine floor, i .e. in places where it will not be disturbed until needed. The approximate location of the overburden and topsoil piles are shown on the MINING PLAN MAP. Mining will begin on a section of the slopes created at the end of the last mining cycle until a near vertical face is open. This face will be worked to the north and south until it extends across the property and at that time mining will progress to the west . As mining progresses thru the site the processing plant will be set near the open face to reduce the haul distance from the mine face. This pit will be operated year-around by Colorado Crushing, Inc. , weather permitting. There may be periods when the demands for material are slow and no mining will take place at which time the mine will become an Intermediate Operation. Stockpiles of material will be maintained on the site and as the need arises, it will be hauled to our project sites or sold to the public. This will be a single stage operation, but the amount of bonded disturbance will be limited to 35 . 0 26 . 8 acres or less at any-one-time. This will allow us to use approximately 15 . 0 acres as a processing plant/stockpile area and approximately 5 acres for the active mining area and 15 acres of partially reclaimed area or area being prepared for mining. As mining progresses around the property the bank slopes will be mined or shaped to the required grades where they are in their final location. This will reduce the amount of work that has to be done to reclaim the 10 (Revised 6/1/17)