InsideClimate: Pipeline regulators in Canada and the United States are being cautioned that claims by Enbridge Inc. that it improved its safety procedures and adopted sophisticated inspection practices are exaggerated and that pipeline ruptures as catastrophic as the company's 2010 accident in Marshall, Mich. [3] are still possible. The warning came in a report filed this month with the Canadian National Energy Board [4], which is considering Enbridge's request to reverse the flow of an oil pipeline in Eastern...