Coal mine in Australia

coal case study

Case study:
Coal mine in Australia

Challenge:
Defining coal versus waste zones in the coal seam

Solution:
OreSense LV

Result:

  • The mine now has confidence that the boundaries that they are mining to are accurate, and no good quality coal is being thrown onto waste dumps
  • The mine is able to make a measurable difference to lowering their cost per saleable tonne, and increase their mine’s saleable tonnes.
  • At the same time the mine production supervisor has more confidence that they can deliver their daily production targets, consistently.

Background:

  • The mine is a coking coal mine, the coal seam is not homogenous.
  • Within parts of the coal seam there are deleterious zones, containing high ash and low volatile matter
  • Not only are these sections of coal not useful for making coal products, they also cause the wash plant to slow significantly when they have to process this material
  • This impacts on the mine’s ability to deliver their production schedule
  • The way that the mine geologists currently manage this challenge is to set ‘off-set’ zones outside of known areas of poor coal quality
  • This has the side effect of reducing the coal available to mine, and increases site costs per saleable tonne
  • The mine geologists have attempted to further delineate and refine the boundaries of these zones, however, the zones move from across the resource, making the cost of a drilling campaign prohibitively expensive, and unlikely to deliver a definitive answer for the location of offset zones.

Solution:

  • By using OreSense LV®, the mine geologists can create a face map, of every working face before they mine it, this map shows clear colour-coded zones of ‘mineable zones from ‘waste zones’.
  • The mine geologists can update the map every day on their daily mine inspection, and providing the map to the mine production supervisor

Result:

  • The mine now has confidence that the boundaries that they are mining to are accurate, and no good quality coal is being thrown onto waste dumps
  • The mine is able to make a measurable difference to lowering their cost per saleable tonne, and increase their mine’s saleable tonnes.
  • At the same time the mine production supervisor has more confidence that they can deliver their daily production targets, consistently.