REV93908

• Permit No: C1981022
• IBM Index Class Name: Revision
• Doc Date: 9/2/1997
• Doc Name: PREDICTED LONGWALL SUBSIDENCE FOR THE SANBORN CREEK MINE OXBOW CARBON AND MINERALS INC SOMERSET CO
• Type & Sequence: TR31
• Media Type: D
• Archive: No

Sanborn Creek Subsidence Page 13 September 2, 1997
Figure 4. Potential height of collapse chimney (Piggott 6 Eynon,
1977).
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