Summit Materials Inc is an aggregates supplier and cement producer in the United States. The company sells products that include aggregates, which it supplies across the United States, and in British Columbia, Canada, and cement, which it supplies to surrounding states along the Mississippi River from Minnesota to Louisiana. In addition to supplying aggregates to customers, the company uses a portion of its materials internally to produce ready-mix concrete and asphalt paving mix, which may be sold externally or used in its paving and related services businesses. The company operates in 22 U.S. states and in British Columbia, Canada and has assets in 21 U.S. states and in British Columbia, Canada through their platforms.