Abstract: Four employees were assigned to tear down an existing 20-ft wide by 100-ft long section of storage racks and bins. Employee #1 and two other employees were working on the second level while another employee was operating a forklift. Employee #1 and another employee were stacking mezzanine flooring sections on a dolly for the forklift to bring down. While preparing to move a piece onto the dolly, Employee #1's foot slipped and he fell through a hole created by removing the flooring. Employee #1 fell approximately 98.5-in. landing on the concrete floor. Employee #1 dislocated his left index finger and broke his left ulna. Employee #1 was not hospitalized.