43 C.F.R. § 3503.37
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. |