The yard I work for gets trucks and trailers all the time,but never aluminum dump bodies. It goes like this : Senebogen with clam rips body off and sends to the baler and throws the rest of the tractor to the excavator mounted shear. He shears the tires off the rims and crunches up engine and tranny to be thrown in the cast iron to be broken pile. The frame and axles get moved to me (the burner) and cut up for heavy melt. Trailers are treated the same way. The whole process takes about 15 minutes