American Petroleum Institute
Association of Oil Pipelines
CGA Damage Prevention
Common Ground Alliance
Department of Homeland Security Daily Report
Environmental Protection Agency
Excavation Damage Reports Magazine
Louisiana State Fire Training Centers
National Fire Protection Association
National Response Center
National Response Team
NTSB
NTSB Pipelines
OPS Communication Initiative
Pipeline 101.com
Southern Gas Association
Southern States Energy Board
State Pipeline Safety Association
Texas State Fire Training Centers
The Department of Transportation's National Pipeline Mapping System System
US Fire Administration
U.S. Office of Pipeline Safety