I worked as a color QC technician at Delmar Photography in Charlotte, NC back in the mid-90's. We processed and printed 35mm and 46mm long roll - the film was generally Kodak VPS, which is also what we used for our control negatives. I think the seniors dept used 70mm but I didn't work in that dept and it's been a while. The printing was done with custom-built package printers that had pneumatically-controlled lens boards for specific sets (4-up in a 5x7 space, or a 5x7 and then an "L" of wallet prints in an 8x10 space, for example), and (if I remember correctly), they got the package info for each frame from a computer network. Some of the printers used 10" roll paper and some used 4" or 5" - I can't remember which. With all 30 or so machines going, it could be quite loud in that room, as each machine pushed the various lens boards around and moved paper and film automatically. We also did titles (for example, for senior prom shoots) by hand, with clear material and adhesive lettering. Another area they worked in was composite photo printing with a variety of machines; one of these was a huge Omega F enlarger known as Godzilla.