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Summit Materials Inc is engaged in the production and sale of aggregates, cement, ready-mix concrete, asphalt paving mix and concrete products and owns and operates quarries, sand and gravel pits, two cement plants, cement distribution terminals, ready-mix concrete plants, asphalt plants and landfill sites. It is also engaged in paving and related services. The Company's three operating and reporting segments are the West, East and Cement segments. It operates in 21 U.S. states and in British Columbia, Canada and has assets in 21 U.S. states and in British Columbia, Canada through its platform.
Dolby Laboratories Inc develops audio and surround sound for cinema, broadcast, home audio systems, in-car entertainment systems, DVD players, games, televisions, and personal computers. The company designs and manufactures audio, imaging, accessibility, and other hardware and software solutions for the cinema, with occasional applications in the television, broadcast, and live entertainment industries. The company operates in the United States and internationally.