Worked in one, Baxters at the time, back in 1986. Pigs would be watching as their mates got slit, they screamed like f**k and would have to be dragged to get slaughtered, sometimes with very cruel ways!
Only lasted a couple of weeks, as the head slaughter man was very odd and kept saying, ''would love to do this to a young bitch''!!
Scarey places them days! Hope in this day and age, its better?