Tuesday night on MSNBC’s “The Rachel Maddow Show,” host Rachel Maddow welcomed Arkansas Attorney General Dustin McDaniel, who discussed Friday’s rupture of a tar sands pipeline in the city of Mayflower, Arkansas. McDaniel said that he is making every effort to ensure that Exxon Mobil will be held fully accountable in his state for the spill, and that he is watching other state officials to learn the best ways to fight big corporations in these types of cases.

On July 25, 2010, in Marshall, Michigan, an oil pipeline burst, spilling hundreds of thousands of gallons of crude oil, much of which flowed into the nearby Kalamazoo River. For nearly 18 hours after the accident, Enbridge, the Canadian company that owned the pipeline, did nothing.

Residents evacuated, poison seeped into the drinking water. Now, three years later, said Maddow, Enbridge is still trying to get the oil out of the Kalamazoo.

One year later, on July 1, 2011, there was another, similar spill in Billings, Montana.

Now, on Friday, March 29, a tar sands oil pipeline owned by Exxon Mobil ruptured in Mayflower, Arkansas.