2021-05-17_PERMIT FILE - M2021032

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CIK Milling Company,LLC Penn Mine/ Lake County, Colorado Mining operations will consist of removing historic vein dump material from the surface. There will be no pit. The mine office will be located at the Leadville Mill. There are no underground openings or ventilation shafts. This is an adequate design given this is a small operation which will remove approximately 400 tons per day. Mine Operation: The mining sequence will first remove surface material from Penn 1, followed by Penn 3. Each area will operate as follows: Establish Safe Site Access. • Gated entrance • Signage (including signs mandated by the permit) Support Infrastructure • Develop lay-down area for equipment and worker parking. • Place rock dams to control surface water flow and sediments. This is described in detail in the stormwater management plan. See Appendix 7-4. • Develop haul road. Grubbing • Remove Trees. Trees will be pushed over with the dozer. This can be easily done given the shallow root structure of pine trees. Felled trees will be retained in piles on the disturbed mining area. As mining advances, the trees will be mulched (the Mulch) and used as organic material for reclamation. • Remove Debris. Debris, including timbers and scrap metal remnants from historic operations will be screened using an inclined screen, loaded onto truck and hauled to the Lake County land fill. It is not possible to determine the quantity of debris as most is trestle posts and supports which is buried in the vein dump material. A rough estimate of 20 truck loads, or 240 yd3 is assumed. Debris will be moved as encountered during mining operations. Material passing the inclined screen will be mined. Production Plan • Material will first be removed to expand laydown area, then removed in a north-south pattern. The mining sequence production blocks will be as follows. See Figure 6-7, Exhibit E Section 6.4 for reference. Initial Application / March 2021 4-3