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PERMFILE123352
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PERMFILE123352
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Entry Properties
Last modified
8/24/2016 10:21:08 PM
Creation date
11/25/2007 11:25:42 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1980007
IBM Index Class Name
Permit File
Doc Date
12/11/2001
Section_Exhibit Name
Exhibit 60 Subsidence Evaluation for Apache Rocks Mining Area & Box Canyon Lease Tract
Media Type
D
Archive
No
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C~ <br /> 5 <br /> <br />=~ <br /> ,~ <br />y - <br /> <br />~ _ ' <br />cn ~5 ~_ <br /> <br />~' <br />f =:) <br />1-:~ C~) -~ ~. <br />t) <br />_; ! r_ / ~ <br />~) .; ~ <br />L J <br /> ri] <br /> <br />J` c <br />._i <br />E ly <br />'_ i <br />v ~ -~ II ; <br /> <br />L <br />~' <br />,y I <br />c <br />~~ s~ <br />I <br /> I <br /> -a1 <br /> <br />-y i <br />.~ -~ - <br />1~'.~ m <br />O <br /> <br />n <br />-~ m <br />C~ <br /> <br />~l~~ ~~'. <br />Figure a. Graph showing maximum tilt (Mm) and horizontal strain (Em) versus the mining panel <br />width to depth ratio (W/d). Tilt (circles) and horizontal strain (squares) for the West Elk Mine <br />subsidence monitoring network are shown with the average National Coal Board (1975) longwall <br />curves. <br />• <br />
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