REP22944

• Permit No: C1982056
• IBM Index Class Name: Report
• Doc Date: 4/15/2003
• Doc Name: 2nd Half 2002 Subsidence Report
• From: Twentymile Coal Company
• To: DMG
• Permit Index Doc Type: Subsidence Report
• Media Type: D
• Archive: No

III. Map:
The monitoring locations for the second half of 2002 are shown on the Second
Half of 2002, Subsidence Map. The map also indicates the location of the longwall face
on a monthly basis.
VI. Conclusions:
Subsidence monument surveys disclosed no unusual developments during the reporting
period. Subsidence magnitudes and projected draw angles were within the anticipated
ranges previously documented for the area.
Structures remained essentially unaffected during the period with the exception of the
predicted impacts to the Union Pacific Railroad and YVEA power line poles. No adverse
impacts, i.e. imminent failure of structure, were evident with regard to these structures.
2002 2ndHalfSubReport Page 2 of 2 3/21/2003