Natural gas pipeline system in the United States
The US natural gas pipeline system is a complex system of pipelines that carries natural gas nationwide and for import and export for use by millions of people daily for their consumer and commercial needs. Across the country, there are more than 210 pipeline systems that total more than 305,000 miles of interstate and intrastate pipelines.
Source: Wikipedia — Natural gas pipeline system in the United States (CC BY-SA 4.0)