The 'all clear' has been sounded for one East Texas city where a train derailment happened on Saturday. Union Pacific says 9-cars jumped the tracks and one car lost its wheels, in a derailment yesterday inside the city limits of Pittsburg. Crews worked into the night to separate the cars from the line and finally got the rails cleared last night. No cars were overturned and nothing was spilled. Officials are still investigating what caused the train to derail.