A collapsible hand rail system integrated with a conveyor for conveying materials from ground level to a roof top or to a level higher than ground level including a first and a second hand rail apparatus, one apparatus mountable to a left side of the conveyor and the other apparatus mountable to the right side of the conveyor, a plurality of post mounting brackets mounted in equal numbers to each side of the conveyor, a plurality of vertical support posts rotably connected to the hand rails and rotably anchored at the brackets, a pair of rear post mounting brackets, one at each side of the conveyor, and a pair of rear vertical support posts, one at each side of the conveyor wherein the first and second hand rail apparatus are collapsible from an erected position and erectable from a collapsed position.