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2014-08-14_PERMIT FILE - M2014027 (3)
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2014-08-14_PERMIT FILE - M2014027 (3)
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Last modified
8/24/2016 5:46:44 PM
Creation date
8/14/2014 3:47:45 PM
Metadata
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Template:
DRMS Permit Index
Permit No
M2014027
IBM Index Class Name
PERMIT FILE
Doc Date
8/14/2014
Doc Name
Adequacy review response
From
Colorado Mining and Exploration, LLC
To
DRMS
Email Name
RCO
Media Type
D
Archive
No
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EXHIBIT D —Adequacy Review Response <br />RECLAMATION PLAN <br />All mining activity will be located on privately owned land. Colorado Mining and Exploration, <br />LLC, will work closely with the Division of Reclamation, Mining and Safety to ensure that when <br />mining is complete all reclamation is completed in a timely and responsible manner. It is <br />Colorado Mining and Exploration's intent, wherever possible, to restore disturbed areas at <br />Crystal Hill to their original levels of natural productivity when mining operations have ceased. <br />The open pit will be left in place because valuable mineral content will remain upon <br />termination of mining, and because future recovery is dependent upon the economic benefits <br />from leaving such deposits uncovered and near the surface of the earth. The historical pit walls <br />were engineered and constructed to minimize environmental degradation. <br />As a consequence, there has been a minimal amount of rock fall from the pit walls since the <br />open pit was last mined in the 1984. <br />The open pit will retain the slope of the historic open pit. The slope angle is based on a slope <br />stability study conducted by John F. Abel, Jr., Mining Engineer, for the previous operator and <br />approved by the Colorado Department of Natural Resources. This study and supporting <br />documentation is located at the end of Exhibit C. <br />Due to the permit area being previously denuded of soil and the coarseness of mine waste it is <br />impracticable to topsoil the mine waste dumps. The waste dump will have ultimate contours <br />that approximate the original hillside. This will be accomplished by placing the new waste rock <br />against the existing waste rock piles and filling in the existing historic haulage roads. Grading to <br />approximate the original hill slope will allow the waste dump to blend into the hillside. There <br />will be no segregation of the waste based on remaining grade of precious metals. On -site <br />crushing and screening will separate the fine, ore bearing material. The screened coarse <br />fraction will contain nothing of economic interest and will be placed on the waste dump. No <br />mined rock will be segregated for future use. The waste dump will be reseeded with a <br />recommended seed mixture. The Bureau of Land Management has been contacted to supply a <br />seed mixture but has not responded. <br />In the open pit, the base will be graded to produce a roughly flat surface and any unstable <br />lower benches will be stabilized. <br />No new roads are to be built except for mine access into the open pit as it is developed. The <br />existing access road to the open pit from the county road will remain. For road safety and <br />storm water control road berms on the outside of the access and waste dump road and will be <br />built. All surface runoff will go into the open pit where it will be allowed to seep into the <br />ground. No standing water has collected in the bottom of the pit over the past 30 years since <br />the last mining occurred. <br />
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