Asphalt workers had an increased risk for lung cancer from coal-tar pitch asphalt and cancer of the mouth, pharynx, larynx, esophagus, and stomach from benzo (a) pyrene and other pitch voaltile agents. [BC Cancer Agency]
This industry comprises establishments primarily engaged in the construction of highways (including elevated), streets, roads, airport runways, public sidewalks, or bridges. The work performed may include new work, reconstruction, rehabilitation, and repairs. Specialty trade contractors are included in this group if they are engaged in activities primarily related to highway, street, and bridge construction (e.g., installing guardrails on highways).