Download
1 / 11

Environmental Costs of Strip Mining of Texas Lignite - PowerPoint PPT Presentation


  • 93 Views
  • Uploaded on

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).

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Environmental Costs of Strip Mining of Texas Lignite' - xander


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Environmental costs of strip mining of texas lignite
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)


Table 3 5 estimates of land reclamation costs for surface mining of coal
Table 3-5Estimates of Land Reclamation Costs for Surface Mining of Coal

Basis: 1980 constant dollars.


Average mine price of coal by supply region survey data 1999 2002
Average Mine Price of Coal by Supply Region, Survey Data 1999-2002

Source: EIA-7A Coal Production Report, file data

Dollars per Short Ton


Coal bed methane
Coal Bed Methane…. 1999-2002

  • 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


Producing coal bed methane

Produce water and methane 1999-2002

Desorption of methane

Producing Coal Bed Methane

From Wiser, 2000


ad