Regulations last checked for updates: Jun 02, 2024

Title 43 - Public Lands: Interior last revised: May 13, 2024
§ 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) Phosphate2,560 acresNone20,480 acres.
(b) Sodium2,560 acres5,120 acres (may be increased to 30,720 acres to facilitate an economic mine)None.
(c) Potassium2,560 acres96,000 acres (larger if necessary for extraction of potassium from concentrated brines in connection with an existing mining operation)None.
(d) Sulphur640 acres1,920 acres in 3 leases or permitsNone.
(e) Gilsonite5,120 acres7,680 acresNone.
(f) Hardrock Minerals2,560 acres20,480 acres in permits and leases, 10,240 acres in leases, but can be increased to 20,480 if needed for orderly mine developmentNone.
(g) Asphalt640 acres2,560 acresOnly available in Oklahoma.
[64 FR 53536, Oct. 1, 1999, as amended at 65 FR 50449, Aug. 18, 2000]
source: 64 FR 53536, Oct. 1, 1999, unless otherwise noted.
cite as: 43 CFR 3503.37