This is so gross and such a biohazard — but, it seems that R&D Systems, a company that does medical testing actually has a permit to dump human and animal blood into the Minneapolis sewer system. (And apparently so do slaughterhouses and other medical facilities, ew.) The amount of blood discovered by sewer workers is so large in volume that it literally spayed up and out into a worker’s face. I mean, here in SF we even have pretty signs over all the sewer drains with pictures of little crabs on them that say “water only, please” — with no disclaimers for animal testing or serial killers.
Blood Sprays Out of Sewer, On City Worker (wcco.com, with icky video, via Digg)