Summit Materials 

Summit Materials, Inc., through its subsidiaries, produces and sells construction materials and related downstream products for the public infrastructure, and residential and nonresidential end markets. It operates through three segments: West, East, and Cement. The company's products include aggregates, cement, ready-mix concrete, asphalt paving mixes, and concrete products, as well as plastics components. It also provides asphalt paving and related services to the private and public infrastructure sectors. In addition, the company operates municipal waste, construction, and demolition debris landfills; and liquid asphalt terminals. It has operations in the United States; and in British Columbia, Canada. The company was founded in 2009 and is headquartered in Denver, Colorado.