Ann: Trading Halt, page-113

Absolutely agree @Rocklicker12 - I believe this is the visual cores of the sulphides in the diamond holes.

I'd assume a drilling contractor called his mate as they pulled it up, telling them "you'll never guess what I've just pulled out the ground" and the buys on open were the result of that.

I'd also assume that they take the 2 days to drill deeper to find the bottom of the intercept. If they don't hit it in time, they could pause trading (although I'd assume they'd just release and update on visuals with bottom of hole update), and release full once bottom hit. If they've already got through the intercept then perhaps they pXRF the core to give an indicative view.

Either way, my money's on visuals, and gains