HEALTH EFFECTS OF OCCUPATIONAL EXPOSURE TO ASPHALT
Asphalt is a dark brown to black cementlike semisolid or solid produced by the nondestructive distillation of crude oil during petroleum refining The three major types of asphalt products are paving asphalts roofing asphalts and asphalt based paints Performance specifications—not chemical composition—direct the type of asphalt produced Most of the asphalt produced in the United