A resurgence of oil drilling in North Dakota is bringing a number of land management issues to light. The mineral rights to 75% of the oil in North Dakota are owned by energy and mining companies; not the private property owners under whose land the oil is often found. This is because mineral rights may have been sold long ago; whereas, the property purchased by a private owner only recently. The drillers and property owners are squaring off against one another over site use, burial of pit liners, remediation, and other issues. Minnesota Public Radio reports.