Quote from CaptainObvious:
The largest crane crawler in the world is being assembled at the Whiting, IN. BP refinery. Came in from Germany about 3 weeks ago. Takes about 6 weeks to assemble. A crane that picks a crane, that picks a crane, that picks another crane.
If you're in the area you really should take a drive down the Blvd. and see what's going on there. 10,000 industial construction types building a new refinery around the old one, then pulling the old one out. Impressive!...