An employee was on the catwalk of a mixing plant at a completed well site. He was burned by a fire, centered on a forklift and a flowback tank that was releasing natural gas. He suffered second- and third-degree burns to his right hand and arm to the shoulder, his left hand, and his back on the right side. He also suffered second-degree burns to the right side of his face (excluding the eyes) and first-degree burns to his forehead. Personal protective equipment and flame-retardant pants were being worn, but not a flame-retardant shirt.