St. Lawrence Cement is a leading producer and supplier of products and services to the construction industry, namely cement, concrete, aggregates, and construction with operations in Canada and on the eastern seaboard of the United States.

Holcim is one of the world's leading suppliers of cement, as well as aggregates (gravel and sand), concrete and construction-related services. From its origins in Switzerland, the Group has grown into a global player with strong market presence in over 70 countries on all continents.  The Group currently employs 48,000 people

As a leading  global  producer and marketer  of  quality cement and ready-mix concrete products,  we work to  provide building solutions  for  customers around  the world and to create  sustainable  value for all of our stakeholders.  We operate in the most dynamic international markets and employ over 25,900 people across four continents.

Koch Industries, Inc., a privately held company based in Wichita, Kan., owns a diverse group of companies with a presence in about 50 countries and that employ more than 30,000 people. These companies are involved in core industries such as trading, petroleum, chemicals, energy, gas liquids, asphalt, fibers and intermediates, minerals, fertilizers, chemical technology equipment, pulp and paper, ranching, securities and finance, as well as in other ventures and investments. World leader in building materials N°1 worldwide in Cement and Roofing N°2 worldwide in Aggregates & Concrete N°3 worldwide in Gypsum Located in 75 countries A workforce of 75,000 people   A Company of ThyssenKrupp Technologies Polysius AG is one of the world's foremost engineering companies specializing in equipment for the cement and minerals industries - a position it owes to the outstanding quality of its products and services.

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