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1987-12-01_PERMIT FILE - C1981017 (173)
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1987-12-01_PERMIT FILE - C1981017 (173)
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Last modified
1/4/2021 2:19:47 AM
Creation date
5/23/2008 10:27:15 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981017
IBM Index Class Name
PERMIT FILE
Doc Date
12/1/1987
Doc Name
Geology Description
Section_Exhibit Name
Chapter III Section D
Media Type
D
Archive
No
Tags
DRMS Re-OCR
Description:
Signifies Re-OCR Process Performed
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to nonexistent . Large faults and dikes correlate reasonably <br /> • well between the two coal beds . <br /> Mining conditions in the Middle bed are <br /> somewhat better than those encountered in the B bed , possibly <br /> because the overburden depth is less than over the B bed , <br /> and because volatile matter of the coal is higher than in <br /> the B bed . <br /> Characteristics of the :fiddle bed include : <br /> Cover : The bed lies under approximately <br /> 2 , 500' of overburden. <br /> Dip : The dip of the bed varies from 100 - 150 . <br /> Thickness : Ranges from V -20' thickness . <br /> Recoverable The maximum height recoverable is 8 ' <br /> Coal : because of the substantial depth of over- <br /> burden, and because the working height of the <br /> • mining equipment is 8 ' . <br /> Roof Adverse roof conditions have been encountered , <br /> Conditions : making a portion of the seam commercially <br /> unminable . <br /> Bounce : The main slope entries were , on one occasion, <br /> damaged by a heavy bounce(stress adjustment) . <br /> Coal seams , or beds , not mined are the A, <br /> Placita and Sunshine. <br /> The A bed is the lowest coal seam in the Coal <br /> Basin anticline. It lies at the bottom of the Coal Basin <br /> Coal Interval , either directly atop the Rollins , or separated <br /> by up to 13 ' of shales and siltstones . The A bed itself <br /> divides at times into upper and lower beds , separated by a <br /> parting of up to 30 ' . <br /> 18 <br />
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