Thanks jollyburger, maybe for offloading derrick crane parts onto the site grounds for prep-work, then tower craned up to the rooftop for assembly.
No work for me tomorrow so I'll be able to monitor (comment and post pictures) as the day goes on from my vantage point.
Hmm, panels coming off instead of being installed
My pixs, March 24
Up to about floor 15, although it looks as if more will be removed
I'm pretty sure that's where the external elevator was recently removed, and they're now installing the panels where it used to be, but they're working from the top, down.
Scrubbing through the video from today and saw the tower crane was busy, everyone wanted a use of it.
Workers fiddling around on the top most roof where I believe a (from referencing RDW989 above posting, a now scheduled) derrick crane will be installed.