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information regarding the geology of the mine permit area can be found in Volume 2, Tab 6 of the <br />mine permit application. <br />• <br />Mine Production and Design <br />During 1998 and 1999, only the Roadside North Portal Mine produced coal. The area <br />mined is shown on Figure 1, 1999 Subsidence Surveys. The overburden in the areas mined at <br />Roadside North Portal Mine ranges from approximately 1,800 feet to approximately 300 feet in the <br />current mining district. Extraction ratios vary from 43% where a 60 foot by 120 foot entry spacing <br />is used to 68% where second mining occurs. During 1999 mining was conducted in the 2ntl West <br />Panel which in turn initiated the development of the Cameo C Seam. The Roadside South Portal <br />Mine was not in production during 1998 or 1999. <br />Projected Mining for 2000 <br />Adverse economic results caused by difficult mining conditions and poor coal quality have <br />caused a cessation of all coal production during December of 1999. No production is scheduled <br />for either mine during the calendar 2000 year. <br />• Surface Inspection <br />Stipulation 12 of the mining permit application requires that surface inspections (pedestrian <br />surveys) of the mining area be conducted in the spring and fall of each year. The 1999 inspections <br />were conducted on July 23 and December 15, 1999. The areas inspected during the survey are <br />shown on Figure 1, Roadside North Portal, 1999 Subsidence Survey. <br />No subsidence related features were noted during the pedestrian surveys. There are no <br />reports of subsidence or subsidence related problems from any adjacent landowner or utility <br />company. <br />Although high cover minimizes the expression of subsidence features on the ground <br />surface, no subsidence features were noted in the area above the Roadside North Portal Mine. <br />The route traversed was directly over the area where the 2ntl West Panel was second mined. <br />Particular attention was given to those areas in the topography where slumps or cracks would be <br />more apparent, such as ridge lines. <br />No manmade or specific natural features have been undermined at the Roadside North <br />Portal Mine during 1999. The attached photographic review of Jerry Creek Canyon depicts the <br />• canyon itself, the steep nature of the canyon walls and the dry, ephemeral stream channel of Jerry <br />Creek. <br />1999 Subsidence Report Page 3 12/29/99 <br />