The complete set is available from the Labor Occupational Health Program at UC Berkeley. If not, choose another topic. It will help them understand this topic. Common sense tells you that work with hot asphalt can cause burns.
Burns arn't the only hazard.
When asphalt is heated, it may produce dangerous gases, vapors, and fumes. One example is hydrogen sulfide gas, which may build up when hot asphalt is stored in unventilated containers. Too much hydrogen sulfide gas can knock you out or kill you. The solvents, binders, and other chemicals used in asphalt can also be very hazardous. You or a crew member may want to add a personal story about asphalt.