Sure he was hollering quite soon, but it was nearly over before the dog and co-worker reacted, that's pretty fast.

All those points made are viable, in no particular order; clear floor, proper footwear, not reaching over rotating machinery, lightweight clothing, a laugh for the COVID mask (more proof administrative safety is secondary to personal safety), better primary shut-off mechanisms, minimally an E-stop.... Can even question the shop layout, who lines up lathes along a wall?

Most, if not all of those we have complete control of. Serious accidents don't get do overs.

Make sure the only shirt you loose to machinery is an unsatisfactory purchase.