EE was clearing debris using a hammer and chisel. EE felt something hit leg and felt a small bit of blood on EE's leg. EE reported it to us on 12/16/19, EE was taken to the Dr. who ordered x-rays. The x-ray was read on 12/19/19 and it was found that there was a .3cm fragment. They attempted to remove it and did not find it. This caused EE to receive a single stitch on 12/19/19.