2014-12-31_REVISION - C1982056

• Permit No: C1982056
• IBM Index Class Name: Revision
• Doc Date: 12/31/2014
• Doc Name: MSHA Letter
• From: MSHA
• To: Twentymile Mining, LLC
• Type & Sequence: PR10
• Email Name: JLE
• Email Name: DIH
• Media Type: D
• Archive: No

Figure 4: Modeled pillar sizes for panel 1 tailgate.
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