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National Grid
Tips of the trade
Welcome to National Grid’s Tips of the Trade for first responders. These tips are intended to help you respond safely and effectively to incidents involving natural gas and electricity. Please review them with your team.
Aftermath of gas explosion
Natural gas migration
Threat of fire or explosion
Natural gas flammability range diagram
Natural gas flammability range
For more first responder safety information, visit firstresponder.ngridsafety.com.
 
 
 
811® | Know what's  below. | 811 before you dig.
 
 
 
 
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