AirportLink M7 is a 6.7km, multi-lane, free-flow toll road located in Brisbane, Queensland and connecting the CBD to Brisbane Airport. Complex D&B activities only 1m away from secant pillars and concrete slabs in direct contact with the blasted rock. Three meter round lengths were only possible through detailed diagnostic vibration monitoring and management allowing for vibration thresholds up to 450 mm/s. Not recommended without expert involvement.