11.   But the employees of the pipeline company, called Alyeksa, believe that a pipeline disaster could be even worse.

12.   But so far this has involved mostly electric utilities acquiring either natural gas utilities or natural gas pipeline companies.

13.   But the federal government changed the rules affecting pipeline companies and their gas suppliers.

14.   Cleanup work, performed by the pipeline company and its private contractors, is nearly complete.

15.   Coyner said other pipeline companies have been subjected to similar levels of scrutiny.

16.   Critics of OPS also say the agency has dragged its feet in requiring pipeline companies to upgrade safety technology.

17.   Duke bought PanEnergy, a Houston-based natural gas pipeline company, in June.

18.   El Paso Natural Gas and FERC see the law differently, saying Congress only authorized FERC to regulate gathering activities by interstate pipeline companies.

19.   Empresas ICA Sociedad Controladora SA said it plans to explore energy opportunities in Mexico with Westcoast Energy Inc., a Canadian pipeline company.

20.   Enron began as a natural gas pipeline company and rapidly moved into the businesses of marketing natural gas and electricity.