The Minnesota Court of Appeals on Monday affirmed state regulators' key approvals of Enbridge Energy’s Line 3 oil pipeline replacement project, in a dispute that drew over 1,000 protesters to northern Minnesota last week. A three-judge panel ruled 2-1 that the state’s independent Public Utilities Commission correctly granted Enbridge the certificate of need and route permit that the Canadian-based company needed to begin construction on the 337-mile Minnesota segment of a larger project to replace a 1960s-era crude oil pipeline that has deteriorated and can run at only half capacity.