Learn the basics on how to use the Emergency Response Guidebook (ERG). Mobile apps are also available: http://phmsa.dot.gov/hazmat/erg-mobile-app
The first 30 minutes of an incident involving hazardous materials are critical. The ERG is a go-to manual for first responders who need to identify specific hazmat risks, steps to protect themselves, and the procedures for containing the incident as quickly and safely as possible.