Ann: Bauxite Hills Operations Update, page-10

I don't mind a negative view. I have a much longer time frame for MMI stock.
Here's my calculation on why I think the company is still okay.
It has an Operating margin of A$8.52/t.
Therefore 3.m wmt * A$8.52/t = $A25,560,000 / Share Issue 1.38 billion = A$0.0185 per share operating margin <-- estimated profit per share 2019 12 month?
This is my estimate for 2019. What they do with the profit, pay down debt and buy more equipment, is still not clear to me. But is seems that they will have money to improve the company. The 17 year mine life gives a lot of time to grow. The lower share price is a buying opportunity if they can get loading speeds up.
Does anyone see a problem with my estimation? Just want to double check it.
Thanks.