I once had to help the Fire Dept remove 2 bodies of my friends so I could piece together the Pringle and restore power. If you have Pringle switches please treat them carefully. BTW VAelec this was about 20-25 years ago on K street in DC, can't be too far from your "ooops".
I notice this was AL duct?
I've had to repair way too many buss duct messes in my years, and as often as not, it was a factory connection, not a field joint.
Nowadays it only gets designed in IF there is NO other way, and there usually is.
Glad to hear there were no personnel injuries.
