Abstract: On July 30, 2002, Employee #1 was driving a water-pull at a new residential development. Heavy equipment was being widely used to construct roads and concrete pads at the site. The water- pull was a combination 1969 Caterpillar 651 tractor, Serial Number 33G272, and a water tank truck, used to wet the soil for proper compaction during pad construction. Employee #1 was in the cab of the Caterpillar and was driving up a short slope when a fire started in the engine of the water-pull. The flames surged out from the engine and ignited Employee #1, who unbuckled his seat belt and threw himself to the ground. Employee #1 sustained third-degree burns over 25 percent to 35 percent of his body and was flown by helicopter to the hospital for treatment. Employee #1 was hospitalized. Coworkers had been operating heavy machinery in the vicinity, but none of them saw the accident directly because of the sloping ground. Subsequent investigation determined that a loose fuel connection was the apparent source of fuel for the fire.