Abstract: A fall arrest system for a silo having a ladder is described. Silos typically have a slopping top and substantially vertical sides. Typically, multiple independent fail arrest systems are used, one for the sloping top and one for the vertical sides. The single fall arrest system described includes: a safety cable, having a top end and a bottom end, to which in use a user connects to; a collar for fitting at the top of the silo, around the neck of the silo to which the top end of safety cable is attached; a pulley at the transition of the slopping top and substantially vertical sides, wherein the pulley supports the safety cable at the transition; and securing means for securing the bottom of the safety cable at the base of the silo.