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Environmental Costs of Strip Mining of Texas Lignite

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

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Environmental Costs of Strip Mining of Texas Lignite

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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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