Texas has the largest U.S. network of natural gas pipelines, with about 270,000 miles of pipeline systems in the state. It was the site of two high-profile deadly pipeline accidents in 2010 – one in Johnson County where a crew installing electrical towers struck a natural gas line that erupted into flames and one in the Panhandle, where a bulldozer struck a pipeline.

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http://www.star-telegram.com/2011/11/03/3498794/audit-finds-that-many-natural.html