I'm assuming they reused the exterior decorative ironwork.
We were in a 1870s brick triangular warehouse building earlier this week. It has most recently been a kitchen machinery graveyard. Working elevator not inspected in 40 years but was sent between floors unattended with heavy kitchen equipment. For sale cheap!
The reason I mention is that it had the original tin ceilings and several thick metal barn type sliding doors.
I don't remember any iron work, but I'm sure there was plenty, and yeah... they'd totally save and re-use all that. The building fell inward, so that would seem bode well for any gates and fencing. I'll try to remember to grab a shot of it next time I'm by there and see if you can spot the new construction.
I suspect the property was owned by someone with some local political horsepower. The reconstruction started almost immediately... kind of almost too fast for architects to develop plans.... kinda like maybe those plans were already in place before the wall fell. Funny.