Dilapidated Slaughterhouse

I was in a dairy processing plant, which was also a slaughterhouse (since all dairy cows end up in the slaughterhouse once they can no longer bear to be milked). The slaughterhouse/milking facility was old and disgusting and on the verge of abandonment but still in use. I remember there was an examination of the milk quality and there was something wrong with it. The machinery was malfunctioning and dangerous to stand close to. I think the building was eventually abandoned and became a spot where Satanic animal sacrifices were made, or maybe the business itself was a front for the operation. I can't remember more, but there was a lot of blood in the end. There were no actual animals, so I don't know where the milk and blood came from. I was saying goodbye to my family for some reason.