Delays to the Dakota Access Pipeline have added millions of dollars to Energy Transfer Partners’ construction tab – but even if the line is approved, the freezing temperatures will bring their own challenges to finishing the drilling process. Frigid weather makes some aspects of pipeline construction more difficult, though not impossible, engineers and experts interviewed by Reuters said this week. While the majority of the construction on the 1,100-mile (1,770 km) line is complete, work on a one-mile segment in North Dakota was halted in September following protests from the Standing Rock Sioux tribe and others, who said it could desecrate sacred lands and contaminate drinking […]