How an IED explodes
Improvised explosive devices, or IEDs, made from pressure cookers are commonly used in Afghanistan, Nepal, India and Pakistan. Read related article.
Impacts of an explosion
The energy released by an explosion can cause a wide range of injuries, depending on the position and distance of a person standing near the blast.
A wall of highly compressed air tears tiny fibers in soft tissue.
Injuries: Lung and ear damage, abdominal bleeding, eye rupture, concussion.
Secondary injuries result from being thrown by the blast.
Injuries: Fracture and traumatic amputation, closed-head brain injury.
penetrates the body.
Injuries: Penetrating ballistic or blunt
injuries, eye damage.
SOURCE: Office of Homeland Security, "Emergency War Surgery," Borden Institute, Walter Reed Army Medical Center, National Counterterrorism Center.