An employee was unloading liquid asphalt cement from a semi-tanker. He left to retrieve a new gasket for the tanker's hose. The valve was opened while he was gone, and when he returned and removed the hose, 300-degree asphalt cement sprayed out of the connection and struck him. He suffered second-degree burns to his left and right forearm, left thigh, lower stomach, and right shin toward the ankle.