Ann: Quarterly Activity Report, page-9

Yeah you are correct regarding the receivables/payables.
As for the mine life, it's low. I don't recall off the top of my head but its ~5 years or so.
There's a reason the market cap is as low as it is - low mine life, rather expensive transport costs to port for export and poor sales has eroded shareholder confidence but recent domestic sales contracts have been signed and outstanding sales this quarter should bring some confidence back I think.

Last year they paid out around $6m in dividends from memory - about 0.3 cents/share. Would hope for the same this year and if we're lucky a special one at the half year mark if performance continues like this.