An employee was operating an 18-inch wood chipper with a winch attachment. The employee had tied a piece of wood to the machine's winch and a piece of excess rope from the winch was wrapped around his leg. As the machine began feeding the piece of wood into the chipper, the employee's leg was yanked towards the machine. The employee was able to engage a safety mechanism that stopped the chipper before his leg reached the chipper wheel. The employee was hospitalized for a fractured pelvis and other injuries.