Laserfiche WebLink
West Elk Mine <br />• ventilation system, forcing MCC to drill large diameter Methane Drainage Wells (MDW) in <br />advance of mining. The MDW's function as discreet ventilation conduits to drain-off the <br />liberated methane after the longwall has passed the well and the B Seam roof strata has caved <br />and fractured within the area of influence for each well. The MDW's have provided <br />additional methane drainage capacity to allow for near normal mining practices for the B <br />Seam. <br />The GIP for the E Seam, with shallower cover and closer proximity to outcrop, is more <br />characteristic of the western B Seam districts. A maximum of 8,000 SCF/A is projected for <br />the eastern fringes of E Seam mining. At approximately half the B Seam GIP, conditions are <br />expected to be better than current B Seam mining. MDW's are planned for the E Seam in <br />case methane levels or other operating criteria warrant their use. <br />C~ <br />• <br />2.04-50 Revised November 1004 PR10 <br />