Ann: Full Year Statutory Accounts, page-3

From the annual report, some sort of update.

"The most recent runs from May 2014 onwards have been undertaken using bentonite bound balls.

Drawing on Mr Blake’s background in iron ore processing, the team conceptually developed a process change that may result in a significant increase in full strength of the balls and commensurate reduction in dust generation. This hypothesis has been tested twice using a batch process through the kiln with some success.

It is anticipated that the project team will undertake a battery of laboratory scale tests to optimise the process and generate data to be used in process design in order to incorporate this step into the demonstration plant."

so my assumption is bentonite didn't fix the dust issue and now they are playing with preheating of the feed to the kiln. Let's hope some success = commercial success.