Just on the 100mt hematite... that's easy, that ambition was...

Just on the 100mt hematite... that's easy, that ambition was dropped because they didn't have 100mt of hematite within their targets that could have been easily utilised. The hem is so far all small deposits, spread all over the shop. Losing the main deposit to the EPA further blew their 100mt aspirations.

Same with Lodestone... talk of Lodestone has been dismissed for a while because unlike Karara, it is in narrow channels with significant waste.
Karara is ofcourse the main game but even that needs to live up to the interpeted geology when they actually mine.
And the cost to produce concentrate remains a prohibitive factor to significant expansion that hematite miners don't face.

Chances of other good sized mag deposits being JORC'd are good from what they have found already, but a shortage of mag won't be the problem... the IO price will be though as to whether the whole project remains economical for GBG(Ansteel is in a different happy place) or not.