Coal age

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  Año 2006, Vol. 111, Número 9

  • FEATURE ARTICLES

    • Blasthole drilling technology: Hole cleaning improvements through tricone bit lug design

      Clarence Zink

      págs. 22-26

      

    • Keeping the pit dry: Mine pumping systems meet drainage and dewatering needs

      Russ Carter (ed. lit.), Kyran Casteel (ed. lit.)

      págs. 31-34

      

    • Laser cladding technology provides corrosion protection and repairs damaged chrome shafts

      págs. 36-37