I don't think it's technically C&M, because as of yet they...

I don't think it's technically C&M, because as of yet they haven't commenced building the processing plant which I think would be the key driver of C&M activities. If they were to halt construction, you'd hope most things can sit idle (i.e. the accommodation camp; diesel generators may require some servicing as would brine pumps etc). The main potential issue would be the impact of leaving pond liners exposed to the sun for long periods - without brine in them I'm not sure if there's a risk of them degrading/perishing over time and possibly needing to be replaced. Perhaps that's part of the rationale of completely filling ponds 1-3 and continuing to line (and then fill) pond 4? It is curious that the regular progress updates seem to have dried up now.