Whedoes the SMF stomaterial?

Do we need a huge warehouse in space?

So, the SMF is receiving regolith from the moon or NEO and processes
that into raw material and some of that raw material into finished
products.

But it won't be able to use all of the material instantly. If the
first order of business is to create the pressure vessel, with one
material, what are we going to do with all of that slag, glass,
aluminum, titantium, etc. until we need it later in the construction
process?

Do we just let it float around the SMF? Do we contain it, bag it, in
some fashion and move it to an enclosure? Not to protect it from the
elements :) but to keep everything confined. Do we just tie all
these different clumps together and move them some distance away? Do
we want them all connected so they have one orbit or do we want
these things seperate and all over the place? How do we maintain
their orbits with respect to the SMF?

Or am I making a problem where none will exist?