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Daily visual inspections of CR 33 and the YVEA power line were initiated on April 28, <br />1997 and continued through June 6, 1997. One azea of the road, near the center of the 8 <br />Right Longwall Panel, heaved and required repair. This azea was temporarily repaired by <br />removing the heaved asphalt and leveling with gravel. An asphalt patch was place on <br />this area on August 22, 1997. The YVEA power line was visually inspected concurrently <br />with CR 33 with no impacts evident during the period. Copies of these inspections aze <br />included in this report. <br />The Union Pacific (UP) Railroad track visual inspections were conducted by UP <br />maintenance personnel from June 7, 1997 through June 30, 1997 for the first half of 1997. <br />Maintenance work performed dwing the period of subsidence is indicated on the <br />inspection sheets. Copies of the railroad inspection forms aze included in this report. <br />The Hayden -Gore Pass line, Wolcott Tap -Wolcott line, and Western Area Power <br />Administration line daily visual inspections were conducted concurrent with the survey of <br />the power poles from November 1996 through July 1997. No damage requiring repair <br />work was evidenced with the power lines dwing the period of subsidence. Copies of the <br />last visual inspection sheets for each of the power lines aze included in this report and all <br />inspection forms for the power lines aze available for review at the mine office. <br />• 111. Map <br />The monitoring locations for the first half of 1997 aze shown on the First Half 1997, <br />Subsidence Map. The map also indicates the location of the longwall face on a monthly <br />basis. <br />[V. Conclusions <br />Subsidence monument and power pole surveys disclosed no unusual developments <br />during the reporting period. Subsidence magnitudes and projected draw angles were <br />within the anticipated ranges previously documented for the area. <br />Structures remained essentially unaffected during the period with the exception of the <br />predicted impacts to the county road, railroad track, and power poles. Minor impacts to <br />the county road were evident, but overall the road remained in good condition both <br />during and afrer the subsidence process. During the period of subsidence, the railroad <br />track was maintained in good condition. No adverse impacts were evident with regazd to <br />the power lines. <br /> <br />2 <br />