The 6 Sigma Control Chart in mining

  • 1
    Control limits.
    Represent how well your process is capable of performing now, when it operates 'normally', and how much variation you can expect.
  • 2
    Out of control points.
    Show the abnormalities in your process, which represent quick opportunities to improve your process and reduce variation.
  • 3
    Causes and actions .
    Record the root causes of the out of control points, and the actions taken by your teams to prevent them happening again.


  •     Control Charts (and Process Management) ensure we keep control of what is happening every day in the fuel farm, and tell us when we need to act on any abormalities. They helped us improve fuel quality from around 400,000 ppm/l to under 2,000 ppml, and generate an extra $5,000,000 a year from increased production.
    N.N. Fuel Farm Manager
  •     Using Control Charts means we can at last actually manage our processes.
    A.A. Business Improvement Manager

aorist Mine Process Management

Control the processes in your mine and minimise variation to get the results you need.

Effective process control and variation reduction is critical to successfully increasing output and reducing costs in complex and inter-dependent mine processes. Through our years of experience in helping clients manage processes more effectively and minimise variation, we can help you increase output, reduce costs, and make your results significantly more reliable and predictable.

You can see a short (6 minute) video of the fuel improvement project shown on this page if you click the first button below. A separate window may open (depending on your browser), and a video showing the model working will play via YouTube. The video has been highly-compressed to reduce bandwidth requirements as far as possible. It will run best with the YouTube video player set to SD.

Alternatively, if YouTube is blocked on your mine or your mine doesn't have sufficient bandwidth, simply click the second button below, and ask for a time-limited link to our file-sharing server, where we can provide you with a copy of the video to download.

see the fuel quality improvement project video

request a copy of the fuel quality improvement project video to download

Lean 6 Sigma case study - improving fuel quality