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2011 Indiana Pre-Shift Contest

CONTESTANT’S BOOK. 2011 Indiana Pre-Shift Contest. June 1, 2011. INDIANA PRE-SHIFT CONTEST 2011 Statement. You are the Pre-shift Examiner for the VINCENNES #1 MINE.

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2011 Indiana Pre-Shift Contest

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  1. CONTESTANT’S BOOK 2011 Indiana Pre-Shift Contest June 1, 2011

  2. INDIANA PRE-SHIFT CONTEST2011Statement You are the Pre-shift Examiner for the VINCENNES #1 MINE. This mine has been developed into the Indiana #5 coal seam which, in this area, is known to be gassy and have some poor roof conditions. You are to conduct a preshift examination for the 1 South Section mmus 001 and 002 for the on-coming production shift. The mine is walking height and the mine is supported by 6 foot fully grouted roof bolts unless otherwise indicated. The section has been idled for two weeks and we have just moved belt up. Some of the section equipment has yet to be moved to this area. We plan to construct some cribs in the returns just outby xc10 on the next shift. Information for proper ventilation of the 1 South Section is in the Ventilation Plan. The Exhaust Fan is running and power is energized underground. The section map you will be provided was updated at the start of the last production shift two weeks ago. Section entries are numbered from left to right. You will begin your examination in the No. 2 Entry Intake/Primary Escapeway/Travelway. You are to report to the Examiner’s Station when you are finished with your examination and we will escort you to the location to fill out the examiner’s record book. Page 2

  3. INDIANA PRE-SHIFT CONTEST2011Written Instructions PRESHIFT CONTEST PROBLEM RULES FOR 2011 NATIONALPRESHIFT CONTEST WILL BE FOLLOWED. CURTAIN STRIPS SHALL BE USED FOR CURTAINS. Page 3

  4. INDIANA PRE-SHIFT CONTEST2011Plan Information • ROOF CONTROL PLAN • Development Mining - Cut Depth – 30 feet (maximum) • Entry and Crosscut widths – 18 feet (maximum) • Bolt Spacing – 4 feet by 4 feet (maximum) • All cuts to be fully bolted within 24 hours. • VENTILATION PLAN • Minimum air quantity in Last Open Crosscut of each MMU – 12,000 cfm. See plan option 1 for section ventilation. • All working places shall have line curtain installed to a point inby the ribline or installed in such a manner so as to keep methane content below 1.0 percent. • When mining, a minimum of 8,000 cfm of air shall be maintained at the end of the line curtain and the end of the curtain shall be no more than 35 feet from the face. • A check curtain is required to be maintained in the belt entry just outby the tailpiece. Page 4

  5. Page #5 INDIANA PRESHIFT CONTEST 2011 Ventilation Plan Section Ventilation Option 1 (for section cycle as shown) No. 1 D c Examiner’s Station No. 2 c Belt tail. Curtain may be installed either side depending on CM No. 3 c c No. 4

  6. Page #6 INDIANA PRESHIFT CONTEST 2011 CONTESTANT’S MAP No. 1 Examiner’s Station No. 2 xc 10 No. 3 No. 4

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  8. NOTES Page 8

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