Governor Brian Schweitzer vowed to cling to Exxon Mobil to get the company clean up the oil spill over the weekend that fouled the Yellowstone River in Montana.

The 12-inch pipeline ruptured on Friday night, 150 miles downstream from the Yellowstone National Park dumping up to 42,000 gallons of crude oil.

The leak was detected by Exxon on Saturday morning and was shut down within seven minutes according to the company.

Federal documents show it took Exxon Mobil nearly twice as long as it publicly disclosed to fully seal a pipeline that spilled roughly 1,000 barrels of crude oil into the Yellowstone River.