Banquet chicken dinners are no prize, either. My brother worked at a Banquet plant for one day, quit, and never ate another TV dinner, ever.
A guy I worked with Offshore drilling rig, Bob, worked in a Hotdog producing plant in New York state somewhere. I've seen him walk down the steam-line in the Galley/dining area, see hotdogs warming in the oily water immediately gag and lose his appetite.
He told us of the hotdog operation, how he had seen some type of wheeled machine , a little tractor get stuck in the huge pile of ground up meat. Said they'd go in, in rubber boots and such and shovel the meat out of the way and get it unstuck. The machine was never cleaned.
Also machinery break-downs, men in there wading around for hours, paying no attention to walking in and out of the meat. Even coming in from outside and wading right into the squashed ground up meat.
Pieces of Hide getting hung up in a coarse screen, hide would have to be pulled out and thrown away.