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Since the Sanitation Services Inc employed by the slaughterhouses got fined for this, Arkansas under Huckabee signed a law removing requirements to verify ages of anyone working under 16. Aka no one is liable if children are working in slaughterhouses and getting chemical burns.
Here's a picture of one of the kids.
They feign ignorance, and because the law bends to capital in the US, they get off with a tiny tiny fine.