Ann: Quarterly Activities Report and Appendix 4C, page-10

The OptiFlox® System will be trialled on the tailings thickener to maximise the use of water, improve productivity and reduce overall operational costs. It is expected that the system may also yield other benefits not readily quantifiable at bench scale operations.

i think this little paragraph above drops a few hints,
Not sure if anybody has seen the size of some of these tailing dams, or even the amount of black water some of these coal mines put out.. if they can get a system or 2 on these the chemical sales should be next level...
The repeat business from Peabody is a very good sign.
unfortunately these things take a lot of time, and large business work on 128day to half/yearly plans.

Good news is they are moving forward and gathering momentum