Employee was cleaning 5 entry with a scoop. As he was cleaning the right rib piece of line curtain fell. He went to re-hang the line curtain a piece of rock fell out of the rib pinned right foot. The rock was approx 72x32x16. He was transported to CAMC and was diagnosed with 6 fractures in his right foot. He was given instructions to follow up with an orthopedic surgeon.