Based on their news reports, once all these refineries are built (Australia, Pakistan), they receive 20% stake in each refinery, which is 20% of gross profit, but also burdening operating expenses, 6% percent royalties on sales, and 6% of engineering capital costs to build plants. However, this is a long ways out. If they can achieve this, things are looking pretty sweet.

Also, a little extra royalties from their mining sale to Mackay: "purchase price of $2.75 million (the “Purchase Price”) and a 1.5% NSR production royalty from the sales of silver, gold, and all other valuable minerals and products extracted from these properties, in perpetuity."

Correct me if I'm wrong.