No, it isn't. Their sales revenue, even if the gold was produced at no cost, isn't anywhere close to even meet their current expenses, much less the unpaid current obligations from prior periods. Mexus costs about $5-600K per QUARTER to operate, and that is before interest and debt payments. That amount requires CASH, which is why Mexus has taken out so many toxic death spiral loans.
If they want to keep the company alive, the cash will logically need to go to meeting their current obligations, not debt that can be settled in shares. Salaries, fuel and processing costs are not free.