Abstract: Employee #1 was a supervisor and mechanic at a small agricultural product haulage firm. On July 3, 1990, a repair project was begun on a grape tank mounted on a flatbed highway trailer. A plastic bucket containing wash solvent and grease residue from previous wheel bearing packing was located on the concrete apron. Sparks from an oxyacetylene cutting torch ignited the bucket's contents. Employee #1 was sprayed with burning solvent as he attempted to put out the fire with a carbon dioxide extinguisher. No credible attempt to clear the welding area of flammables/combustibles was made prior to the cutting torch operations.