News: HFR Highfield Resources Requests Trading Halt, page-6

It's all bit of a blur, but didn't the boss say in one of the recent gee-up videos that (in my layman's terms, not his mining tech terms) the purity of product as it will come out of the ground has been reassessed to be something like 10% more than originally assessed.
That video was, I think, made after the release of the 1/4ly activity statement which, I think, did not mention that +ve reassessment.
If my Sangriafied memory is correct, then the upcoming clarification to the statement will probably be to draw attention to that purification upgrade.
That will be market influencing good news.
Cheers in finger-nail-biting optimism....Al Dinga