Coal age

• 

  Año 2006, Vol. 111, Número 2

  • FEATURE ARTICLES

    • Coal companies invest in more longwall capacity: Leading American longwall operators report record production

      Steve Fiscor

      págs. 26-30

      

    • Coal remains a hot commodity for Australia

      Lon Bram

      págs. 32-34

      

    • The on-line analyzer's potential to improve mine and preparation plant efficiency

      Michael Evans

      págs. 39-41