Holcim, 71 Spring St, Ashland, MA 01721, US

Aggregate Industries is an environmentally responsible producer of aggregate-based construction materials in the United States and the United Kingdom. With the acquisitions of Southern Nevada Paving, Frehner Construction and the creation of Regal Ready Mix, the company operates more than five regional businesses, along with its U.S. corporate office in Rockville, Md. Aggregate Industries products include aggregates, recycled products, ready mixed concrete, asphalt and liquid asphalt, landscaping and construction supplies. The company s products are used to build roads and highways, bridges, schools and a variety of other buildings. Aggregate Industries' office in Saugus, Mass., is one of several company locations throughout the United States.