Someone Miscalculated.

Watch at Youtube.

This is video of the demolition of the Ohio Edison Mad River Power Plant's old tower. It was supposed to fall to the northeast, or to the right in the video. Instead, after a couple of delayed detonations, it falls to the left, smashing through a set of power lines which run very close to the camera's position. The power lines whip up and down wildly, endangering the observers. No one was hurt.