Gaps in construction oversight and in owner TC Energy's standards, policies and administrative controls were the root cause of last year's massive spill into Kansas waterways, says a new third-party independent analysis, with redacted details.

Line owner-operator TC Energy says it has recovered most of the 14,000 barrels that spilled last month but an 800-person response team remains activated to address environmental damage

Crude oil spill in Kansas is contained but not fully cleaned up, as fed agency allows full line operation and Canadian owner TC Energy has yet to state pipeline rupture cause.

Owner TC Energy announced partial reopening Dec. 14 of the Canada-to-U.S crude oil line but has not said what caused the pipe rupture or when cleanup of the spill into a Kansas creek would be completed.

Responded to a call for urgent action with a well-engineered containment approach that has kept thousands of barrels of oil from harming US waters.

The 2010 BP Deepwater Horizon oil-well blowout caused dramatic, widespread shoreline loss along Louisiana’s coast, says a new study by the U.S. Geological Survey and the National Aeronautics and Space Administration.