EE WAS WORKING IN THE C15 TUNNEL ON THE SOUTH SIDE IN A TIGHT WORK SPACE AND SHE WAS SUCKING UP DUST WITH THE HOSE. THE HOSE WAS JERKING AND THE HANDLE CAME OUT OF HER HAND CAUSING THE HOSE TO STRIKE HER IN THE CHEST. THE HANDLE ON THE HOSE IS 1 1/2"" PVC PIPE.