They did jack crap. Anything more complicated than a light-bulb or a toilet that broke, the lab handled it internally somehow (either getting the company to fix it or doing it ourselves).

There were a few department-wide resources. Again, ultimately funded off someone (or a bunch of people's) grants

Funded as indirect costs.

The "A" of F&A is capped at 26%.

That means any overhead over 26% went to some kind of facilities cost at your lab.

(Most private industry informal accounting would call that 26% "20% overhead").