New and existing construction techniques include trenching: a long, deep cut in the ground used for laying water, sew, and electrical pipes. Some trenches go as deep as 30 feet. While working in a trench, a worker can become engulfed by collapsing soil. Knowing how to shore the walls of the trenches, using specialty devices to stabilize the walls in place, firefighters can safely make their way to a victim and continue the rescue operation. After gaining access, through continuous digging and communication, they must receive emergency medical attention as soon as possible. These techniques can also be used in landslide and structural collapses.
