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2021-08-31_REVISION - M2017007
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2021-08-31_REVISION - M2017007
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Last modified
12/28/2024 1:52:56 PM
Creation date
8/31/2021 10:02:13 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M2017007
IBM Index Class Name
REVISION
Doc Date
8/31/2021
Doc Name
Request for Technical Revision
From
Colorado Crushing, Inc.
To
DRMS
Type & Sequence
TR1
Email Name
JPL
JLE
AWA
Media Type
D
Archive
No
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Basically, the mine is shallower then originally thought by z20 feet. The method of mining <br /> reduced the active mining area and with the amount of reject material available it allows for <br /> backfilling as mining progresses. This reduces the backf ill material needed to be placed on the <br /> slopes because it leaves the temporary slopes at 2:1 or less and allows for a cut/fill method of <br /> final sloping instead of backfilling. The reclamation activities then become sloping using a cut/fill <br /> method, recoiling and seeding the entire area. The working face is decreased to 1,000 feet <br /> instead of the 1,700 ft. originally proposed and the partially reclaimed slopes are reduced from <br /> 1,200 ft to 1,000 ft. with no backfilling needed, only cut/filling grading along the reject material <br /> backfill face. <br /> Once the scale house and scale are moved to the SW entrance it will open the area up to <br /> mining progressing to the north along the entire east-west working face. The western limit of the <br /> 35 acres is approximately 265 feet east of the fence that bisects the permit and the 35 acres do <br /> not include the School house area except where a small amount of topsoil is temporally stored. <br /> Technical Revision - Map Exhibit 1 shows the current areas of disturbance, the associated sizes <br /> of each area and the location of the proposed 35 acres to be bonded at this time. <br /> August 12, 2021 3 <br />
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