Which of the following is NOT a manual breaching technique?

The identification of electronic mine detectors as not being a manual breaching technique is accurate because they rely on technology rather than human physical intervention. Manual breaching techniques typically involve hands-on methods used by personnel to locate and identify unexploded ordnance. Probing refers to using physical tools to search through soil or debris to detect ordnance, while visual detection involves visually scanning the area for signs of explosive devices. Similarly, dogs are trained to use their keen sense of smell to detect explosives manually.

In contrast, electronic mine detectors function by emitting signals that detect metal or other specific components of mines and ordnance from a distance, which means that they do not require the manual, direct engagement associated with the other methods. This reliance on electronic systems differentiates them from manual techniques focused on direct human action and interaction with the environment.