North Dakota’s monopoly workers compensation insurer acted appropriately when it denied an injured worker’s preferred choice of prosthetic limb and sent him out of state for a medical exam to determine what kind of prosthesis he should receive, the North Dakota Supreme Court ruled in a split decision. Dennis Whedbee worked as a safety specialist for Black Hawk Energy Services Inc. in Williston, North Dakota, and was injured in a 2012 oil rig explosion, court records show. The North Dakota Workforce Safety & Insurance Fund, the state’s comp insurer, accepted liability for Mr. Whedbee’s injuries and care, including the amputation of his left arm below the elbow.