FREEMAN, S.D. — TransCanada is investigating “visible signs of oil” on a small surface area along its Keystone pipeline right-of-way about four miles from Freeman in southeast South Dakota.

One of two energy substations near Murdo, South Dakota, meant to power oil pumps down the Keystone XL Pipeline. Both sit nearly completed and unused. Jerry Simonson/CNN ...

TransCanada Corp.'s Keystone pipeline leaked an estimated 210,000 gallons of oil onto agricultural land in northeastern South Dakota, but state officials don't believe the leak polluted any ...

Keystone Pipeline Oil Spill Reported In South Dakota : The Two-Way The oil leak occurs just a few days before Nebraska state regulators will decide on the fate of TransCanada's controversial ...

Climate advocates and representatives from the Rosebud Sioux Tribe in South Dakota protest against the Keystone XL pipeline in front of the home of U.S. Senator Mary Landrieu (D-LA), chair of the ...

PIERRE, S.D. (AP) — South Dakota is poised to approve laws aimed at potential protests against the planned Keystone XL oil pipeline, seeking to prevent disruptive demonstrations like those ...

One of two energy substations near Murdo, South Dakota, meant to power oil pumps down the Keystone XL Pipeline. Both sit nearly completed and unused. Jerry Simonson/CNN ...

TransCanada Corp. officials say workers have shut down much of its Keystone pipeline after an oil leak in South Dakota. Skip to content NOWCAST WPBF 25 News at 6 p.m. Sunday ...

TransCanada Corp. officials say workers have shut down much of its Keystone pipeline after an oil leak in South Dakota.The Thursday morning leak was detected by crews and isolated, officials say ...