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• Mining SummarX <br />During the year mining was done only at the Roadside North Portal (RSN) due to the higher quality <br />of coal and the current market demand. The Roadside South Portals (RSS) was being pumped and <br />ventilated. When the RSS mining was discontinued the FCT continuous haulage unit was removed <br />from the mine and is no longer being used. <br />In the RSN, mining was done in the 4th West and 5th West panels. Development of the 5th West <br />panel continued into February 1997 and was withdrawn without secondary mining. Mining was <br />done using a continuous miner and shuttle cazs. In the 5th West panel the pillar spacing was <br />70x120'. The extraction ratio for the panel was 39%. The 4th West panel was developed from <br />February through July and retreated from July through October. The panel was develop with <br />60x120' pillar spacing fora 43% extraction. On retreat from 4th West 2-3 rooms were driven towazd <br />the 5th West panel and room pillazs and two rows of the chain pillars were slabbed or split. The <br />overall recovery within the panel was 68% and 57% including the bamer between 4th and 5th West <br />panel. Development mining in 3rd West panel began in October and continued through the end of <br />the yeaz. Pillar spacing for this panel was 60x80' resulting in an extraction ration of 48%. <br />Projected Mining_ <br />During 1998 mining is projected to continue orily in the RSN. The 3rd West panel will be <br />• completed with secondary mining on the way out of the panel. The 2nd West panel will be <br />developed and either panels will be mined perpendiculaz to the panel past the 1st West panel or the <br />2nd West panel will be retreat mined. Secondary mining is projected to have an extraction ratio of <br />60 - 70%. <br />Surface Inspection <br />An inspection routes was walked in the spring of 1997 and one route was walked in the fall over <br />areas projected to be mined or already mined areas in the RSN. One inspection routes were walked <br />over the RSS in the spring. Photographs were taken of the azea and the routes taken were marked <br />on a map. These routes and picture locations aze shown on the enclosed 1997 Subsidence Surveys <br />map. Had subsidence features been found or suspected, measurements would have been taken of <br />the features. The spring survey at the RSN was done by Robbie Wilson, a geologist out of the <br />Peabody Wes[em Flagstaffoffice, the spring RSS survey was done by Matt Trotter, a summer intern <br />from Colorado School of Mines, and the fall RSN survey was done by Larry Reschke. <br />The first RSN loop ,inspected on April 17, 1997, was over azeas being mined and projected to be <br />mined. The route started along the road in Main Canyon over the projected 2nd West panel where <br />picture 1 was taken looking north at the high relief of the canyon wall above 5th and 4th West <br />panels. Pictures 2 thru 5 were panoramic shots taken near the shear vertical cliffs above the <br />• <br />Page 2 <br />