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Estimated Natural Gas Pipeline Mileage in Lower48States. http://www.eia.doe.gov . 2008
[3]
Natural Gas Pipeline Capacity&Utilization. http://www.eia.doe.gov . 2008
[4]
Major Change in Natural Gas Transportation Capacity,1998-2008. http://www.eia.doe.gov . 2009
[5]
Interstate Natural Gas Pipeline Segment. http://www.eia.doe.gov . 2007
[6]
Expansion of U.S.Natural Gas Pipeline Network:Additions in2008and Projects through2011. http://www.eia.doe.gov . 2008
[7]
Natural Gas Year in Review2008. http://www.eia.doe.gov . 2008
[8]
U.S.Natural Gas Pipeline Compressor Station Illustration,2008. http://www.eia.doe.gov . 2008
[9]
Natural Gas Compressor Stations on the Interstate Pipeline Network:Developments Since1996. http://www.eia.doe.gov . 2008
[10]
Major Natural Gas Transportation Corridors. http://www.eia.doe.gov . 2007