Activists acting in solidarity with protesters seeking to stop construction of an oil pipeline in North Dakota temporarily shut five pipelines able to carry more than 2 million barrels a day of Canadian crude into the U.S. Enbridge Inc. said protesters attempted to slow the flow of oil on a pipeline in Minnesota by using bolt cutters to tamper with valves, forcing Enbridge to shut two of its main lines running from Alberta to the U.S. as a precaution. Spectra Energy Corp. also said it shut a section of its Express Pipeline in Montana after activists trespassed and interfered with a valve. The company said it’s cooperating with law enforcement, and is taking steps to restart the line. TransCanada Corp. said it shut the Keystone pipeline as a precaution. Kinder Morgan Inc. shut a section of its Trans Mountain line in Washington state, which has since been restarted. The […]