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Headquartered in Houston, Texas, Columbia Pipeline Group companies own and operate about 15,000 miles of strategically located interstate natural gas pipelines, integrated with one of the largest underground storage systems in North America. From the Gulf Coast to the Midwest, Mid-Atlantic and Northeast, our systems connect premium natural gas supplies with some of the nation’s strongest energy markets, serving customers in 16 states.
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Donahue is a Milford, OH-based company in the Energy and Utilities sector.