What are the minimum royalty rates?

Commodity Minimum royalty rate (a) Phosphate 5% of gross value of the output of phosphates or phosphate rock and associated or related minerals. (b) Sodium 2% of the quantity or gross value of the output of sodium compounds and related products at the point of shipment to market. (c) Potassium 2% of the quantity or gross value of the output of potassium compounds and related products at the point of shipment to market. (d) Sulphur 5% of the quantity or gross value of the output of sulphur at the point of shipment to market. (e) Gilsonite No minimum royalty rate. (f) Hardrock Minerals No minimum royalty rate. (g) Asphalt 25 cents per ton (2,000 pounds) of marketable production.