This is the recording of development face (or tunnel) blast in metal mine using electronic detonators and emulsion explosive. Since underground is a confined space, typically the people involved in blasting are located meters away from the blast to ensure that they in a safe area. Therefore, unlike Open pit mining where the visibility and location make it very favorable to observe the blast, it is harder in the underground to see a blast. This video allows us to see how a typical underground blast look from detonation to the end.
Source: Sushant Pratap Singh
