2012-05-11_PERMIT FILE - C1981033 (3)

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• 2.05.3(2) Barrier pillars are blocks of coal which are deliberately not extracted during the mining process in order to provide protection or support to the mine entries or reserves. The Mine Plan includes several barrier pillar types. They are as follows: Main Entry Barrier Pillars. These main entry barrier pillars will be located on each side of the main entries to provide the necessary support to keep the main entries open for the life of the operation. Panel Pillars. These pillars act as a partition to separate mine panels. After a panel has been mined out its entries are sealed and the combination of the seals and the panel pillars completely isolate the mined out panel from the remainder of the mine. The portals of the Bear No. 3 Mine are located at the outcrop of the C -Seam. The portals have an equipment roadway and intake entry which are common entries, a belt entry, and a ventilation return entry. The ventilation return portal entry is where the mine • ventilation fan is located. Mining Sequence Description • Actual mining and development work for the Bear No. 3 Mine began following approval by the Division and OSM in early 1982. In 1982, a gob disposal area was established within the old works of the C -Seam near the first east panel. This gob area was established to dump rock and waste material cleaned up in the old entries of the Edwards Mine and also for other development work, gob work, etc., that may have to be accomplished during the life of the mine. The location of this waste disposal area is shown on the C -Seam Mine Plan Map (Map 9). Mining in the C -Seam was complete in mid 1989. Access to the B- Seam was accomplished by the use of two rock slopes and a ventilation opening developed from the C -Seam to the B -Seam to allow men, materials, and coal to be transported underground with little or no additional disturbance. 2.05 -6 Rev. 11 -30 -93