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1998 Mid-year Subsidence Report <br />August 1/, /998 <br />Page 2 <br />moved in early July to the 12NW Panel. Development mining occurred in the 12NW, 13NW, and <br />23NE Panels, B South Mains and Box Canyon Mains. Longwall mining will continue in the <br />12NW panel and is expected to begin in the 13NW panel in January or February 1999. <br />Development mining will continue in the 13NW, 14NW, and 23NE Panels, B South Mains and <br />Box Canyon Mains. <br />Visual surveys of the Jumbo Mountain and the NE Panels area were conducted by MCC's <br />surveyors during the setting of the panels for the aerial survey. No new cracks in these areas were <br />noted. Cracks previously identified in the Jumbo Mountain area continue to heal. <br />Please call if you have questions. <br />cc: Henry Barbe <br />Kathy Welt <br />Availability of Records <br />98midyrsub.do~ <br />