To obliterate a mountain, one must first drill a series of holes 2.4 metres deep – in either a square or diagonal pattern, depending on the rock type and face condition. A crew moves in to load the holes with blasting agent, typically a mix of ammonium nitrate and fuel oil. Detonators and boosters are laid and an explosive cord is run over the mountain face. A fuse is lit. It explodes the deto ...
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