jueves, 18 de octubre de 2012

Mining Questoins


  1. WHAT IS THE DIFFERENCE BETWEEN SURFACE MINING AND UNDERGROUNG MINING?
A.When the coal is fewer than 125 feet under the surface its mined by surface mining.When its deeper than that its mined by underground mining.
  1. WHAT KIND OF MACHINES ARE USED IN SURFACE MINING? NAME THEM.
        A.Trucks.
  1. WHAT ARE THE TUNNELS IN UNDERGROUNG MINING USED FOR?
A.They are used for traveling throughout the mine, moving coal from place to place.
  1. HOW DO THE CONVEYOR BELTS HELP IN THE PROCESS?
A.They take the coal to the surface.
  1. WHAT ARE THE THREE DIFFERENT TYPES OF MINES BUILT IN UNDERGROUND MINING? HOW ARE THEY USED?

            A.Slope is when the mine is a litle bit deeper than surface mining you use slope.Drift mines are built when the coal lies in the slide of a hill or mountain.Shaft mines may be 125 to 1.000 feet deep.

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