PERMFILE121286

• 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

Table 4.6.1.5.2 - 1 Maximum Predicted
Subsidence, No. 1 Mine
Maximum
Overburden Predicted
Depth Subsidence4,5
Extraction Area (ft) (ft) Notes
Single Longwell Panel 1
500 4.3
1000 2.1
2000 0.7
All Lon9wa11 Panels 2
500 6.5
• 1000 6.5
2000 6.1
All Longwell Panels Plus Previously Mined Out Area 3
500 6.5
1000 6.5
2000 6.5
t
NOTES:
1. Midth of mined out area equal to the width of any single panel
shown on Map A (approximately 350 ft).
2. Nidth of mined out area equal to the width of all panels shown
on Map A (approximately 1900 ft).
3. Nidth of mined out area equal to the width of all panels plus
the width of the previously mined out area shown on Map A
(approximately 3Q00 ft).
4. Maximum predicted subsidence based on Natiot-al Coal Board data
• (Fig. 3 and Fig. 4. 1975).
5. Average extracted seam height equals 8 ft.
19
(Revision JUNE 1982)