Chemical Treatment
It is not clear that Pink Slime has ever made anyone sick, but Tuna Scrapings certainly have. The difference? Chemical treatment of the former but not the latter, apparently.
The way that food is produced and processed in our industrialized society virtually grantees that much of it would be poisonous to some degree because of spoiling before it gets to our kitchens. However, the food industry has all sorts of ways of avoiding that, ranging from freezing to heating to radiation to various chemical and physical treatments. The ammonia treatment associated with the Pink Slime Maneno of…