Cost Comparison of Gob Hole and Cross-Measure Borehole Systems to Control Methane in Gobs

摘要

The capital investment and operating costs of two methane-control systems used during longwall mining operations are compared in the Bureau of Mines report. Costs are given for a surface gob hole drainage system and an underground cross-measure borehole drainage system to control methane gas in gobs in four coal mining areas-central Pennsylvania, northern West Virginia, southern Virginia, and northern Alabama. Present-worth analysis is used to determine the more cost-effective alternative in each location.