How temporary is temporary? Why temporary? Are you moving soon and
want to take the floor with you? Do you need to take it up every
evening to turn the shop back into a living room? Do you want a
floor you can send to the refiner to be burned to reclaim sweeps?
More detail would help narrow the possibilities.
What kind of subfloor have you got? Are you laying it directly on
concrete or are you on wood over joists or sleepers?
Do you do your own casting? You can put benches, polishing stations
and various machinery on a floor you wouldn't want under an area
where you're doing big melts.
Just trying to understand your needs.