The court affirms a district court grant of summary judgment to the National Park Service on the grounds that the Park Service's deer management program in Gettysburg National Military Park…

The court upholds the U.S. Department of the Interior's (DOI's) decision to deny lessors' request to cancel their Native American oil and gas lease because of the lessee's…

The court holds that the Quiet Title Act does not require the Interior Board of Land Appeals (IBLA) to refer the determination of chain of title mining claims to the federal district court.…

The court upholds the Secretary of the Interior's approval of increased dock fees charged by a private marina operator at the Lake Mead National Recreation Area. The court first holds that,…

The court holds that the Bureau of Land Management's (BLM's) denial under the Waste Isolation Pilot Plant (WIPP) Land Withdrawal Act of an application to drill on an oil and gas lease…

The court holds that an oil company must turn over to the U.S. Department of the Interior (DOI) documents that pertain to the arm's-length sales of oil it purchased from its subsidiary in non…

The court holds that oil and gas lessees failed to state a claim under the Outer Continental Shelf Lands Act's (OCSLA's) citizen suit provision when they challenged the U.S. Department…

The court holds that a D.C. Circuit ruling that the U.S. Department of the Interior's (DOI's) decision to assess royalties on nonrecoupable take-or-pay payments was an arbitrary and…

The court holds that the district court, in applying the rule of reason, did not abuse its discretion in dissolving an injunction when it held that the environmental impact statements (EISs)…