There are two methods of release. Always plan for both in case of a change in strategy.

Controlled release

The objective of a controlled release is to make enough space to safely remove the victim from the form of entrapment without increasing their injuries or discomfort. It is slower and more systematic than immediate release. This procedure permits release and removal from the entrapment without causing any deterioration of the trapped person's condition as a result of the extrication.

Controlled release includes careful delayering of rubble in order to prevent further injury, particularly crush injury.

If possible, any release of a victim should be done under medical supervision.

The preferred method of extrication is controlled release.

Immediate release

If the condition of an injured person deteriorates rapidly, ambulance paramedics at the scene may request the urgent release of the victim.

For an immediate release, you will need to quickly select the tools and techniques to provide enough space to free the injured victim from the entrapment. In many cases you may only have a matter of minutes to release the victim (if possible) to allow paramedics to perform lifesaving techniques.