§ 281. Prospecting permits for chlorides, sulphates, carbonates, borates, silicates, or nitrates of potassium; authorization; acreage; lands affected

§ 282. Leases to permittees of lands showing valuable deposits; royalty

§ 283. Lands containing valuable deposits not covered by permits or leases; authority to lease; acreage; conditions; renewals; exemptions from rentals and royalties; suspension of operations

§ 284. Lands containing coal or other minerals in addition to potassium deposits; issuance of prospecting permits and leases; covenants in potassium leases

§ 285. Laws applicable

§ 286. Disposition of royalties and rents from potassium leases

§ 287. Extension of prospecting permits