EE BROUGHT 2""X 6"" BOARD TO THE CRUSHER TO REPLACE ONE THAT WAS BROKEN. HE LAID THE BOARD DOWN,TOHELP CO-WORKER ON THE IMPACT, HE WAS GOING TO MOVE AROUND TO THE OPPOSITE SIDE OF IMPACT AND STE PPED BACKWARD A FEW STEPS AND STEPPED OFF OF AN ELEVATED AREA. (ABOUT 1') ON TO THE EDGE OF THE BOARD EDGE, ROLLING HIS ANKLE IN THE PROCESS. NOTHING WAS BROKEN ONLY SPRAINED.