A rock punctured a BNSF train engine Friday outside Pasco, Washington, causing about 2,000 gallons of diesel to spill along the tracks. The engine held about 3,000 gallons of diesel.
None of the fuel has leaked into the Columbia River, a BNSF spokesman said.
The boulder tumbled early Friday morning from nearby cliffs and onto the track, where the train ran atop it. The 108-car train was carrying freight to Seattle.