When I was close to it I always used A$16 for freight ... so...

When I was close to it I always used A$16 for freight ... so close enough. My rough numbers leverage your data @miningnut, if I were guessing for the quarter:
625kT sold
Revenue $90.09m
Cash costs @A$80/t
royalties A$7.2m
admin A$1.0m
operating cash flow A$31.89m
capitalised mining; STDSF,development A$6.0m
notional FCF -> 25.89M
less dividends paid A$11m

At December they had cash & receivables -> A$183m ... inventory at year end looked firm and given sales activity, difficult to imagine too much cash sunk in additional inventory investment. So, in theory, they ought to give A$200m a good push or scare at least. Stating the obvious, that's nigh A$0.20 / share cash....

Hope I'm close to right.

Aside from GRR having a very big box of surprises always at the ready, my only reservations are:
(a) STDSF ... I think this is about 12 months post expected commissioning date ... that sort of delay would not have been cheap and maybe a write down ahead;
(b) Melbourne development ambitions ... no idea and I can only hope that FIRB rules require GRR to apply;
(c) the current underground mining concept ... is this a red herring?

Have a great day