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PERMFILE121286
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Entry Properties
Last modified
8/24/2016 10:19:43 PM
Creation date
11/25/2007 9:13:45 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981025
IBM Index Class Name
Permit File
Doc Date
12/11/2001
Doc Name
Subsidence at North Thompson Creek Mine
Section_Exhibit Name
4.0 Appendix 4-H
Media Type
D
Archive
No
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C~ <br /> <br /> <br />Teb1e 4.6.1.5.2 - 2 <br />Maximum Predicted <br />Subsidence, No. 3 Mine <br />Maximum <br />Overburden Predicted 3 4 <br />Depth Subsidence ' <br />Extraction Area (ft) (ft) <br />Single Pillar Panel <br />1000 3.2 <br />1500 1.8 <br />2000 1.1 <br />All Pillar Panels <br />1000 6.5 <br />1500 6.5 <br />2000 6.1 <br />Notes <br />l <br />2 <br />NOTES: <br />1. Midth of mined out area equal to the width of any single panel <br />showh on Map B (approximately 460 ft). <br />2. Midth of mined out area equal to the width of alt panels shown <br />on Map B (approximately 2400 ft). <br />3. Maximum predicted subsidence based on National Coal Board data <br />(Fig. 3 and Fig. 4, 1975). <br />4. Average extracted seam height equals 8 ft. <br />20 (Revision JUNE 1982) <br /> <br />
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