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Revised 11/85 <br />• Barrier pillars are blocks of coal which are deliberately not extracted <br />during the mining process in order to provide protection or support to <br />the mine entries or reserves. Mine Plan includes several barrier pillar <br />types. They are as follows: <br />Main Entry Barrier Pillars. These main barrier pillars will be located <br />on each side of the main entries to provide the necessary support to <br />keep the main entries open for the life of the operation. <br />Fire Protection Pillars. Afire protection pillar will be left as shown <br />on the Mine Plan Map (Map 9), to provide support to recover the panel <br />pillars and to act as a partition in separating mine panels. This <br />partition will act to prevent containment of intake air and will also <br />serve as a firewall in case a panel were to catch fire. <br />The proposed drift portals of the Bear No. 3 Portals will be located at <br />the outcrop of the C Coal Seam. Each set of portals will have an <br />equipment roadway, an intake entry, a belt entry, and a return entry. <br />During the development stage of the operation, these return portal <br />entries will host an operating fan for mine ventilation. <br />Mining within the next 5 years calls for the extraction of reserves only <br />in the C Coal Seam. Future mining into the B Coal Seam, which is below <br />the C Coal Seam, will probably be accomplished by the use of a rock <br />slope driven from the C Coal Seam to the B Coal Seam to allow men, <br />materials, and coal to be transported underground with little or no <br />additional surface disturbance. <br />Mining Sequence Description. Actual mining and development work for the <br />Bear No. 3 will begin following approval by the Division and the OSM. <br />This work is scheduled for early 1982. One of the first jobs of the <br />Bear Coal Company will be to develop two additional entries parallel to <br />the existing three entries found in the old Edwards Mine. The two <br />entries will be on each side of the three entry system and will extend a <br />distance of about 2,000' in from the portals. The first east panel will <br />be developed off the entries and a small block of coal in this panel <br />-19- <br />