PERMFILE134368

• Permit No: C1981022
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Doc Name: Water Communication Potential from Overlying Workings /Abel, 1992
• Section_Exhibit Name: Exhibit 2.04-E4 Part 6
• Media Type: D
• Archive: No

Sanborn Creek Project Page 12 August 21, 1992
Figure 3. Cumulative probability of chimney collapse height (Gray
• et al, 1977)
IOOy'
90'

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._ 80~
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HEIGHT OF CHIMNEY COLLAPSE (•Ft)
•