What is the difference between UXO and DMM?

The distinction between UXO (Unexploded Ordnance) and DMM (Discarded Military Munitions) lies in their definitions and the circumstances surrounding their presence. DMM refers specifically to military munitions that have been intentionally discarded, meaning they were disposed of by military personnel and are no longer intended for use. Conversely, UXO encompasses ordnance that has been deployed but failed to detonate as intended during combat or training operations. This ordnance may still pose a significant hazard due to its undetonated state.

By identifying option C as the correct choice, the answer highlights that DMM pertains to munitions that are intentionally discarded, while UXO refers to those military munitions that remain in the environment without having detonated. Understanding this distinction is crucial for properly managing and addressing risks associated with both types of ordnance.