A journeyman glazier died after attempting to lift a 1000 pound case of glass with the 60-foot-long articulated boom of a two- man rated manlift. As the victim attempted to raise the case of glass, which weighed substantially above the 600-pound-rated lift capacity of the manlift, the off-side wheels on the base of the manlift were pulled 4 1/2 feet off the ground. When the victim realized he was in danger of turning the manlift over, he immediately reversed the controls to lower the boom. With the controls reversed and the manlift operating under full power the boom dropped approximately 2 feet, causing slack in the sling being used to move the case of glass and allowing the sling to slip free from the manlift. Relieved of the weight of the 1000- pound case of glass, the boom of the manlift hurtled skyward and the victim was catapulted from the bucket. The victim fell to earth more than 30 feet from the bucket. The victim died of his injuries 44 hours after the incident. NIOSH investigators concluded that, in order to prevent future similar occurrences, employers and employees must: 1) ensure that only fully trained and qualified personnel be permitted to operate equipment and machinery; 2) ensure that equipment is operated within the limits of its design specifications at all times; 3) require that fall protection equipment be employed by all individuals working in elevated platforms; 4) explore the practicality of utilizing pressure relief valves on all hydraulic equipment.