Seeing that crane reminds me of the tragedy that happened in July of 99 with a crane like that here in WI. It was the tallest crane in the world. I walked past the thing once on the way to a game and it was so big you can't even describe it.
"Three construction workers were killed July 14 when a 567-foot crane lifting a 400-ton section of a retractable roof bent in half and collapsed inside the new Miller Park stadium being built for the Milwaukee Brewers' professional baseball team. An estimated 1,200 tons of concrete and debris fell, killing the workers and injuring five others, including the crane operator.
The dead were Jerome Starr, 52, Jeff Wischer, 40, and William DeGrave, 39, who were in a cage that was being hoisted by another crane when the disaster occurred. Fortunately nearly all of the other 700 construction workers at the site had been removed as a precaution during the roof lift.
The crane, nicknamed “Big Blue,” is one of the largest such pieces of equipment in the world, requiring a 1,150 ton counter-weight to keep it balanced. The shock caused by the crane's collapse was severe enough to be measured on the nearest seismograph at the University of Wisconsin-Milwaukee."
Here's an amazing video. http://craneaccidents.com/bigblue.mpg