Case Study: The O-Pitdev picked up deviation in the back row of holes at this quarry, with some deviating by as much as 1.0m from their design position. The back row of the holes were right up against the access ramp into the quarry, meaning that if the blast was fired with the deviated holes, the integrity of the main access ramp would have been compromised. Because this deviation was picked up by the O-Pitdev, the quarry was able to take corrective action by re-drilling these holes and ultimately protecting the integrity of the ramp.