"In the mid 90's gravity circuits were still considered an add-on component by a lot of companies. In 1999, I fitted a spare 30 inch Knelson to a stream from the tailings screens and began pulling 10's of ounce per hour from a 20% stream. When asked why I wanted to retrofit a complete new gravity circuit to the plant and what would the payback be, I replied: You've just spent $M's of dollars getting the gold out of the mine and through the processing plant only to put it back in the ground. The project will pay itself back by the time you have signed the check and got yourself a cup of coffee."
- Jon Price, Manager Processing - Sons of Gwalia, Australia
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