You decide to head to the DNA Lab. Perhaps they had been digging up fossils and doing DNA experiments like in Jurassic Park with dinosaurs! Or maybe something more realistic...
Inside the lab you find many large tubes filled with clear liquid (definitely not water) draping the walls, within them you see bones bubbling at the surface as they are dissolved. A little hose connected to each tank, storing up the bubbles in bulk. It only gets creepier when you realise they are human bones! At the centre of the room is a large computer which is storing large amounts of unique DNA samples from the dead human cells stored in the bubbles.
It's safe to say you are thoroughly horrified. But it's definitely along the lines of the dark secret of the company you were looking for!