Coal age

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  Año 2008, Vol. 113, Número 5

  • FEATURE ARTICLES

    • Location, location, location: The steadily improving performance of GPS machine location and guidance systems means that production equipment can run - with greater precision and productivity - but it can't hide

      Russell A. Carter

      págs. 22-24

      

    • Longwall shield design: Is bigger better?

      Thomas M. Barczak, Stephen C. Tadolini

      págs. 26-33

      

    • Hydraulic excavator overhauls- when and what to plan for: New design techniques, materials, and maintenance concepts can help extend shovel life to 100,000 hours or more

      Russell A. Carter

      págs. 34-35