N.D. Cent. Code § 15-05-13: Oil, gas, and other leases separate from grazing and farming leases

All leases made for the purpose of obtaining and extracting oil, gas, coal, cement materials, sodium sulfate, sand and gravel, road material, building stone, chemical substances, metallic ores, or colloidal or other clays must be separate and distinct from any lease of the land for grazing and farming purposes and the regulations made by the board of university and school lands must provide for the use of the lands for grazing and farming purposes without interference on the part of the lessee for the purposes aforesaid.