Radio Network House imploded (video)

The video above is of the 14-storey Radio Network House building in Christchurch, which was damaged in the earthquake last year.

The implosion went better than expected with the structure rolling more to the north than was expected. The velocity of the collapse was also very slow at just 12 millimeters per second, with not damage occurring to the nearby buildings.

The work was carried out by Controlled Demolition Inc. using 60kg of explosives, at a total cost of $1 million. Apparently the implosion saved around $200,000 over the alternative methods that were suggested.

Source: Stuff