PrintLesson 6.4: Blasting Patterns
We have learned much about explosives, as well as some analytical procedures to help us design blast rounds in surface and underground mines. We know that a blast round consists of multiple holes arranged in certain geometric patterns, and we know that the holes are not necessarily fired at the same time. We don’t know much about these geometric patterns for the holes, nor the time delays that may be used. You will recall from the first lesson of this Module, we watched the video clip, “Dance of the Detonators,” and we saw vivid evidence of different patterns and the use of timed shots. In this lesson, we’ll look at some common patterns, talk about their use, and we’ll look at delayed firing of holes, including the various technologies available to use for this purpose.