LiveLeak Challenge...

I've been digging through the internet all day today and my google-fu has failed me completely.

There was just a video posted with some guy knocking blocks off from the top of one of these massive chimneys, and it got me thinking..

I am looking for pictures or video on what it was like and the construction of these massive chimneys (towers), but I have not been able to find anything at all. Not even one picture.

The only thing that I have found so far is comments that they used to put the scaffolding up and build the chimney around the outside of it, from the inside out.

Help a guy out?!