Blasting like this was used to cut a V in South Mountain in Phoenix to make way for the 202 South Mountain Highway. It was a much smaller area but the blasted every weekday for a year. They would drill a series of holes in the rock, fill with a liquid explosive, and set charges in less than a day. Each blast was filmed at a high speed so they could identify and failed charges. A full size mining truck would move the broken rock away. The V was just deep enough to build ramps on each side for the roadbed. this is a great example of applied math in action.

Rick