PREFABRICATED SECTION OF HANDRAIL IN PLACE AS A BARRIER TO FLOOR OPENINGS. WERE NOT UTILIZING THE SAFETY HARNESSES AND LANYARDS PROVIDED AND BEING WORN. INJURED EE FELL A TOTAL OF 46 FT. FIRST IMPACT WAS 28 FT THE EE SUFFERED A LACERATION ON HIS HEAD, BROKEN RIGHT ARM, HAIRLINE FRACTURE TO RIGHT LEG, AND A FRACTURED RIB.