Is there a limit to the acreage of lands I can hold under permits and leases?

Yes. The limits are summarized in the following table: Commodity Maximum acreage for a permit or lease Maximum acreage of permits and leases in any one State Maximum acreage in permits and leases nationwide (a) Phosphate 2,560 acres None 20,480 acres. (b) Sodium 2,560 acres 5,120 acres (may be increased to 30,720 acres to facilitate an economic mine) None. (c) Potassium 2,560 acres 96,000 acres (larger if necessary for extraction of potassium from concentrated brines in connection with an existing mining operation) None. (d) Sulphur 640 acres 1,920 acres in 3 leases or permits None. (e) Gilsonite 5,120 acres 7,680 acres None. (f) Hardrock Minerals 2,560 None None. (g) Asphalt 640 acres 2,560 acres Only available in Oklahoma. [64 FR 53536, Oct. 1, 1999, as amended at 65 FR 50449, Aug. 18, 2000; 90 FR 33312, July 17, 2025]