On Thursday, authorities said a natural gas pipeline carrying the volatile oil from the Marcellus Shale in Pennsylvania ruptured and spilled hundreds of gallons of gas.

The pipeline ran through the town of Wausau, which has a population of 1,500 people and is in the heart of the state’s shale gas region.

Authorities said the spill was discovered when a gas leak detector went off on Tuesday.

The leak has since been contained.

The gas leak was caused by the removal of a portion of the pipeline that was improperly welded.

Wausau is about 50 miles south of Pittsburgh.

The area is known for its shale gas deposits and a number of natural gas exploration and production projects.

The company that owns the pipeline said the leak was not caused by corrosion and that the leak could have been caused by other problems with the pipeline.