Two workers rode a self-propelled lift machine to their deaths as it crashed to the ground. One was washing windows and the other was obtaining measurements for building changes. One of the victims was operating the controls of the machine in which they were working. The machine had a boom, which was extended into an unstable position because of the crowded area where the work was being done. One wheel of the unit went off the sidewalk, causing the machine to tip over. Design changes in the lift machine were recommended after this incident. The need for regular maintenance and testing of […]