Most of that swarf is st/st from drilling some plate recently. I keep a few old metal tins open for the little bit of waste I produce. Any small metal household items that bust go in there too. When it's full I empty it on a tip run. Keep using until the bottom falls out.
Bugger! Been searching for years for one of the vices, the knurling tool and surface gauge I made circa 1983. Well I found them...in a seized barn box I also made right down to the hinges. Time hasn't been kind!
Seem to recall I hardened some of those parts...the surface gauge base maybe in cyanide salts. I recall the antidote being on the wall. Happy H&S free days!