I will do my utmost to find out for certain, however there is...

I will do my utmost to find out for certain, however there is evidence [flimsy, but not entirely without basis] that the tests were being done at ALCOA's Kwinana refinery.

If that is the case, there must be some sort of intent. Getting anything done onsite via non AWC is a logistical circus, so to plan and utilise the mobile infrastructure needed , would take a great deal of planning and negotiation.

2 x Generators and bags of ,what appeared to be bauxite, outside 2 mobile offices, or 'dongas'. A the person who sees it has zero idea of the work going on in there, it's difficult to tell for certain.
Photos are strictly forbidden and everything is under constant monitoring around the refinery, so I would not want someone to risk their employment.

I suppose a simple phone call to the office in Cott might be the easiest way to find out too. Might just be that simple.