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Environmental Costs of Strip Mining: Insights on Reclamation and Methane Production

Delve into the environmental repercussions of strip mining Texas lignite, covering reclamation costs, methane desorption, and production factors. Explore the economic and ecological aspects of surface mining. Utilize data from 1980 to 2002 to understand the impact of coal bed methane production on the environment. 8

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Environmental Costs of Strip Mining: Insights on Reclamation and Methane Production

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  1. Environmental Costs of Strip Mining of Texas Lignite • Area stripping • Overburden not high sulfur Reclamation cost CT = 0.055 CA/T CT = Cost in cents per ton T = coal seam thickness in feet CA = reclamation cost in dollars per acre ($200 in Texas, adequate rainfall for revegetation)

  2. Table 3-5Estimates of Land Reclamation Costs for Surface Mining of Coal Basis: 1980 constant dollars.

  3. Average Mine Price of Coal by Supply Region, Survey Data 1999-2002 Source: EIA-7A Coal Production Report, file data Dollars per Short Ton

  4. Coal Bed Methane…. • Methane physically adsorbs onto coal • Can desorb methane by.. • Reducing pressure (pumping water) • Injecting carbon dioxide, nitrogen, etc. • Features…. • Very shallow production (cheap) • Plentiful--nearly every coal bed has methane with it • Must produce a lot of water • Economical at >2$/MCF

  5. Produce water and methane Desorption of methane Producing Coal Bed Methane From Wiser, 2000

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