
The second-largest tar sands oil spill in the country — which left a black pockmark on Kansas grasslands a few weeks ago — will be harder to clean compared to past oil spills.
In early December, nearly 14,000 barrels of oil known as diluted bitumen spilled in north-central Kansas, three hours outside of Kansas City, Kansas. The cleanup is still underway, with at least 4,000 barrels now cleared from a waterway known as Mill Creek. But as time goes on, environmentalists and infrastructure experts worry about the oil that will be more difficult to clean.