Yellowcat, I think I know the lab you mean, I visited one in Bristol for work about 3 or 4 years ago, it had been a superb lab, but the new owners wanted capacity.
On a visit to my local lab (in the UK) 2 years ago I found the same as you whole LF enlargers in two skips, again unfortunately too damaged to salvage, I did get a few bits, and two turrets full of Componon lenses which luckily had been kept and put to one side.
Most of the old dunk-dip machimes have been replaced by minilab machiness.
Ian