At 800 tons Rocky Bal-Boulder is/was the biggest single boulder hanging over SH1 Kaikoura. Yes, even bigger than Million Dollar Boulder (see 2017 news story).
The boulder was drilled with 94 holes by our blast team who then loaded it with 40kg of high explosive, the codes were entered and the button pushed.
A successful blast with good fragmentation. NZTA even made a movie about it, but not staring Sly Stallone.
The closure of State Highway 1 both sides of Kaikoura after ex-cyclone Gita had a silver lining for the North Canterbury Transport Infrastructure Recovery (NCTIR) team: they had a chance to blow up a large boulder while no one was on the road. Check out this amazing footage.Posted by NZ Transport Agency - South Island on Thursday, March 1, 2018