Abstract: At 8:15 a.m. on August 16, 2007, Employee #1, of Balfour Caulking & Waterproofing, Inc., was turning on a rubber kettle in preparation for applying hot rubber CCW-500R roofing material on the third floor outdoor podium at a building in San Francisco, CA. The roofing material that he added to the machine became stuck and, not realizing it was already hot, he pushed on the material in the machine. The hot roofing material splashed out on his arms and on the right side of his face, burning him. An inspector who worked for the building was nearby and came to the Employee #1's aid. He then called the representative of the General Contractor, who drove him to St. Francis Hospital emergency room. Employee #1 was seen by a physician in the emergency room, medicated and admitted. The next day physicians cleaned the material from his arms and face. On August 22, skin was grafted from his right leg to both of his arms. He was hospitalized until August 28, 2007. No accident-related citations were issued.