Two exhaust stacks implode using 40 pounds of dynamite

The video above starts off with a lot of talking about the project, but ends with the actual implosion from two angles.

The demolition is being carried out as part of a recovery program on the Savannah River Site. This job involved the removal of two 145-foot tall, 700 ton stacks previously used for over 50 years along with two P and R Reactors, both of which were decommissioned.

Here's how the stacks were prepared:

The base of each stack was modified to create "columns" into which they will drill 80 15-inch-deep horizontal holes for explosive loading. The explosive charge was initiated by nonelectric detonators ranging in time from 25-200 milliseconds to assist in controlling the rate and direction of the fall of each stack. Seismographs were used in the immediate area to monitor the vibration and air blast generated by the demolition.

A total of 40 pounds of dynamite was used in the implosion. All demolition work is being carried out by Controlled Demolition Inc.