surface coal slope

  • 4VAC25-130-785.15. Steep Slope Mining. - ia Law

    Coal Surface Mining Reclamation Regulations » 4VAC25-130-785.15. Steep Slope Mining. Section ; Print; PDF; email; Creating a Report: Check the sections you'd like to appear in the report, then use the "Create Report" button at the bottom of the page to generate your report. Once the report is generated you'll then have the option to download it as a pdf, print or email the report.

  • Surface Mining Methods and Equipment

    Surface mining is generally considered to provide better recovery, grade control, flexibility, safety, and working environmen ts than underground mining. Figure 3 shows a comparison of the total injury rates in US coal mines. The injury rates have declined both in surface and underground mines.

  • Citizen's Guide to Farmland Reclamation - Illinois DNR

    The positive results of surface mining include greater mining safety for bot h man and mach ine as well as virtually recovery of the mineral. The production rate in underground mines can be limited to as little as 50% as coal is left behind for roof support and other reasons.

  • Developments in the analysis of footwall slopes in surface ...

    Surface mining of coal, particularly in areas of mountainous topography, often involves the formation of extensive footwall slopes parallel to the strata dip. Due to structural deformation steep dips on the limbs of folds may be encountered in association with thrust faults, jointing and residual shear .