Pipeline 101: "Seeks to be your introductory resource for energy pipeline information. We invite you to explore the pipeline industry, from the steel in the ground, to the people and technologies that ensure reliable energy delivery and safe operation."

PHMSA: (Pipeline and Hazardous Materials Safety Administration) part of the U.S. Department of Transportation.
 

Call 811: Provides information, campaign materials, and testimonials about the federally-mandated, national "Call Before You Dig" number.
 

CGA: (Common Ground Alliance) is "a member-driven association dedicated to ensuring public safety, environmental protection, and the integrity of services, by promoting effective damage-prevention practices."

NPMS: (National Pipeline Mapping System) provides this page on their website to enable you to search for Pipeline Operators in your area.
 

API: (American Petroleum Institute) is the only national trade association that represents all aspects of America’s oil and natural gas industry.
 

INGAA: (Interstate Natural Gas Association of America) a trade organization of 25 members who, combined, operate approximately 200,000 miles of pipelines and serve as an indispensable link between natural gas producers and consumers.