PERMFILE102766

• Permit No: C1981032
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Section_Exhibit Name: CHAPTER S MITIGATION SUBSIDENCE CONTROL PLAN
• Media Type: D
• Archive: No

e
ESPEY, HUSTON 8 ASSOCIATES, INC.
•
period of time, where the forces and pressures of subsequent mining in
adjacent reserves will not affect the support pillars.
As presented, the calculations and graphs illustrate that all the
projected pillar sizes are adequate achieving a safety factor of at least 2.5.
U

5-15