MRT manufactures and supplies a variety of premium asphalt aggregates and superpave applications. These high performance aggregates are primarily used for busy roads, highways, and airport runways. Many are sold for use on busy highways like the 407, 401, 35, 115, and in airports including Pearson International. Chances are you’ve driven over a premium MRT asphalt product! The aggregate products meet Ontario Standard Specification (OPSS) requirements and have been approved on the Ministry of Transportation (MTO) designated source list for premium aggregates.