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REP11756
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REP11756
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Entry Properties
Last modified
8/24/2016 11:42:48 PM
Creation date
11/27/2007 12:45:35 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981033
IBM Index Class Name
Report
Doc Date
3/2/1990
Doc Name
BEAR MINE 3 -12/89 SUBSIDENCE & SLOPE STABILITY MONITORING REPORT
From
MLRD
To
MATT HAYES
Permit Index Doc Type
SUBSIDENCE REPORT
Media Type
D
Archive
No
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<br />• Miried Land Rec:ltmat.ior~ 9 Decemt>er 11, 19'o''a <br /> TABLE 4 -SUBSIDENCE <br /> SUBSIDENCE POINT CHANCES - RELATZVE MOVEMENT <br /> JUL Y, 1989 TO NOVEMBER, 1989 <br />Point Horizontal Distance Bearing Elevation <br />No. <br />UT2 0.04 N56°19'E -0.16 <br />U4 0.01 N45°00'E -0,22 <br />U1 0.01 North -0,02 <br />U3 0.04 East +0.02 <br />U2 0.03 South +0.03 <br />U5 0.10 N84°17'E +0.01 <br />U9 0.11 S26°34'E +0.10 <br />UA1 0.06 S18°26'E +0.09 <br />U8 0.06 S38°40'E -0.08 <br />The error of closure for this traverse was 0.22 feet of error in <br />e total traverse distance of 18,207 feet which reflects a closure <br />ratio of 1 part in 83,000. <br />• The elevations show a change that reflect a drop in value of <br />-0.02 feet on the average. <br />The closures of our elevations using trigonometric leveling have <br />been very good. Errors ranging from 0.10 feet. to no error. <br />TABLE 5-SLOPE STABILITY <br />RELATIVE MOVEMENT <br />NOVEMBER, 1988 TO JULY, 1989 <br />BEAR MINE N0. 3 <br />Point Horizontal Distance Bearing Elevation <br />No. <br />U16 0.18 N03°11'W -0.01 <br />U17 0.21 N35°13'W 0.00 No Change <br />U18 0.27 N26°34'W -0.01 <br />U19 0.34 N29°32'W -0.11 <br />U23 0.06 N09°28'E -0.04 <br />NOTE: Station U19 is a #5 rebar along the access road to the <br />portal. The point was run over by equipment between November, <br />1988 and July, 1989, thus the large drop in elevation. <br />• <br />
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