What is the term for the material thrown out by a blast that is near the point of detonation?

The term for the material that is thrown out by a blast near the point of detonation is known as primary fragmentation. This refers specifically to the debris and shrapnel that is produced from the explosive device at the initial moment of the explosion. Primary fragmentation typically consists of the actual components of the explosive device itself, as well as any surrounding materials that are dislodged by the force of the blast.

This terminology is particularly important in the context of explosive incidents, as understanding the type and behavior of released materials can assist in assessing the impact of an explosion and in forensic investigations. Understanding the dynamics of primary fragmentation helps professionals in law enforcement and emergency response roles to evaluate blast scenes and ensure proper safety measures and responses are implemented.