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PERMFILE43941
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PERMFILE43941
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Entry Properties
Last modified
8/24/2016 10:46:24 PM
Creation date
11/20/2007 11:45:34 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981014A
IBM Index Class Name
Permit File
Doc Date
12/11/2001
Section_Exhibit Name
2.05.6 MITIGATION OF SURFACE COAL MINING OPERATION IMPACTS
Media Type
D
Archive
Yes
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• With the exception to the above noted monitoring frequency changes, all <br />other monitoring requirements and procedures will be the same as specified <br />in Rule 2.05.6 (6), and described in the Subsidence Survey, Subsidence <br />Monitoring and Subsidence Control Plan prepared by RMG and contained in <br />Exhibit 23, Subsidence Information. <br />Subsidence Control Plan <br />The subsidence control plan consists of a detailed description of mining <br />methods and ground control measures utilized to minimize subsidence and <br />potential resultant damage. The existing plan prepared by RMG is still <br />adequate and will continue to be used by EFCI at the Southfield Mine. <br />The Southfield Mine is designed to utilize continuous miners for mine <br />development and retreat. Typical equipment utilized in each mine section <br />includes a continuous miner, two (2) shuttle cars, a feeder/breaker, a <br />section power center, and a roof bolting machine. <br />• The Southfield mining operations utilize a room and pillar method of <br />extraction. Mining development results in removal of 38 to 53 percent of <br />the total reserves during development of each mining panel. Development <br />is followed by the retreat phase. The retreat phase results in removal <br />of an additional 40 to 44 percent of remaining reserves. Final extraction <br />in most sections will vary between 75 and 93 percent of total reserves. <br />The mine plan showing panel locations, mine entries and expected <br />sequencing of development and retreat phases is illustrated by the Mine <br />Plan Map, (Map 17). <br />As described in the original RMG subsidence evaluation, there are four (4) <br />structures which may be significantly impacted resulting in material <br />damage or diminution of reasonably foreseeable use by planned Southfield <br />mining operations. These structures include: <br />• <br />2.05.6-63 <br />
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