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EXHIBIT C MINING PLAN <br /> The Detroit City Mine is a mineral specimen mine, and therefore does not operate in a manner <br /> typical of most metal mines. The "ore" pursued in this operation is high quality mineral <br /> specimens located within the unique geology of Mt. Bross. Mining will affect the surrounding <br /> area by periodic generation of inert waste rock from the development of drifts and stopes <br /> underground. Unlike most metal mines, there is no large amount of vein ore to be excavated and <br /> processed in pursuit of the target commodity. Material excavated form the workings will be <br /> inspected and all mineral specimens will be removed. The remaining waste rock will be placed in <br /> a waste rock landform (WRL)which will be eventually topsoiled and reclaimed or shipped to an <br /> offsite location. Inert waste rock will be sold and shipped off site to existing approved landfills <br /> and utilized for its high calcium carbonate composition. Potentially acid generating material will <br /> be shipped and disposed of offsite as needed at one of the following facilities: Waste <br /> Connections' Pueblo facility or Clean Harbors-Deer Trail. These facilities are permitted with the <br /> Colorado Department of Public Health and Environment. Any material sent to any of these <br /> facilities will provide the appropriate chain of custody documentation to satisfy DRMS <br /> requirements. <br /> The primary reason of the conversion of this reclamation permit from a 110(1)to a 110(2) for <br /> this operation will be the fill and widening of the access road to allow for more parking. This <br /> additional parking added 0.4 acres to the permit area, increasing the total permit area to greater <br /> than 4.99 acres and thus necessitating the conversion of this permit from a 110(1)reclamation <br /> with a maximum size of 4.99 acres to a 110(2) reclamation permit with a maximum size of 10 <br /> acres. <br /> 1. Mine Life <br /> The mine will operate for an additional 5 years with the conversion from a I I0(1)to a 110(2)- <br /> reclamation permit. This mine life is based on estimates of the mineral specimens that are <br /> believed to be found underground. It could be shorter, or longer, depending on market conditions <br /> and what quality and quantity of specimens are found. <br /> Detroit City Mine c.*Ixwicki wd nswcistm PIRA' <br /> October 2019 C-1 <br />