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2-i2 <br />2.1.5 Mining Method and Schedule <br />• Initial exploration activities that started in early 1977 were conducted by advancing a 5 <br />entry system approximately 1400 feet due east from the coal outcrop. The advance of these <br />entries was terminated when a fault not identified by previous exploration was encountered. <br />The mine was idled until further studies on the extent of the faulting were completed. <br />On resuming production, fault probes were driven to further identify the orientation of the <br />fault lines to the south, east and west of the existing entries. The underground exploration in <br />conjunction with surface investigation has ident~ed the probable trace of the east fault. <br />Investigation of the extent and trace of the west fault continues. The displacement of the <br />Cameo Coal Seam along the east fault trace varies from 70 to 100 feet. <br />A 5 and 6 entry system was driven parallel to the east fault in a northerly direction, OO1N <br />• Section. These entries were driven about 3,800 feet to the north. No further advance was <br />possible in that direction because of deteriorating roof conditions. Fault probes driven east at <br />crosscut 28 intersected the fault where it was expected but the west probe did not. A second <br />mining section, 002 N, was then driven on the west side and parallel to 001 N Section, see <br />Fgure 2.1.1. The 002 N Section was connected to 001 N Section at crosscut 28. <br />Coal was extracted from the lower half of the 20 foot thick Cameo coal seam in 001 N <br />Section. This increased the recovery from the area mined without pillaring the area. Additional <br />roof pressure was not be transferred to 002 N Section allowing future access to the graben <br />and to the west of the graben. This type of second mining has not been done previously in this <br />mine the results are encouraging. <br />• <br />Nlo Volume 1 4-29.96 <br />