Abstract: At 12:20 p.m. on August 17, 2004, Employee #1, who worked for a demolition contractor, was part of a crew knocking down a building. He was prying a nail out of hardwood flooring on the second floor when he lost his balance and stumbled into a space between the floor joists. He then fell a short distance onto the drywall of the first floor ceiling. Employee #1 sustained a fractured vertebrae in his back, for which he was hospitalized. The joists were exposed because the flooring had already been removed in the area where Employee #1 was working. The ceiling drywall had not been removed and Employee #1's foot made a hole in it when he stepped between the joists.