CRH public limited company, through its subsidiaries, engages in the manufacture and supply of building materials worldwide. It provides cement, aggregates, readymixed concrete, asphalt/bitumen, and agricultural and chemical lime materials; architectural and structural concrete products; clay products, such as clay facing bricks, pavers, blocks, and roof tiles; and building products, including construction accessories, building envelope products, and insulation products, as well as offers transportation, construction, and paving services. The company also produces concrete masonry and hardscape products, packaged lawn and garden products, and prepackaged cement mixes; precast, prestressed, and polymer concrete products, as well as plastic box enclosures; manufactures and installs modular precast structures for use in structures, such as hotels, apartments, dormitories, and prisons; and concrete pipes for use in storm and sanitary sewer applications. In addition, it provides architectural glass products comprising insulated, spandrel, laminated, security, and sound control glass products; engineered aluminum glazing systems products consisting of storefront and entrances, curtain wall, skylights, and architectural windows; and welded wire reinforcement and fencing products. Further, the company markets and sells supplies to the construction sector and to the general public through professional builders’ merchants stores and Do-It-Yourself (DIY) stores. As of December 31, 2009, it operated 663 builders’ merchants stores and 241 DIY stores. CRH plc was founded in 1949 and is headquartered in Dublin, Ireland.

Dukane Precast makes precast and prestressed concrete building components including flat panels, structural and decorative columns, spandrels, and beams in a variety of finishes. Its wall system division makes precast concrete floor and wall panels for residential and commercial construction. Dukane's products are touted as being energy efficient and weather-proof, with its walls being able to sustain tornado-force winds. Dukane also operates a delivery fleet and offers engineering design and erection services. Customers include DeVry, Carson Pirie Scott, and Medieval Times.

Dyckerhoff is cementing relations throughout Europe and the US. The construction materials company makes and sells cement (accounting for more than 85% of sales) mainly in Western and Central Europe. It also sells ready-mixed concrete and concrete products. Dyckerhoff has operations in about a dozen European countries as well as in the US, including subsidiaries such as Dyckerhoff Beton in Poland, Duena and Beton Union in Germany, and Ciments Luxembourgeois in Luxembourg. Germany and Western Europe account for about half of Dyckerhoff's sales. In addition to the founding Dyckerhoff family, the company's shareholders include Buzzi Unicem, which controls about 98% voting shares.

Founded in 1941, Eastern Industries is a division of Stabler Companies, which was purchased by New Enterprise Stone & Lime Co. in 2008. Eastern Industries coaxes stone out of sylvan lands. Operating through about 30 quarries and plants in central and eastern Pennsylvania, the company provides crushed stone and gravel, hot-mix asphalt, ready-mix concrete, masonry sand and blocks, retaining walls, pavers, and road oils for a variety of construction projects, including highway renovations, municipal rehabilitation projects, and residential and commercial developments. It also distributes building materials.

Since 1922, the Levy Group of Companies has been providing services and solutions that are specially designed to meet the unique needs of each customer, including steel mills, construction developers, road-building companies, cement producers, and an array of other industries that rely on Levy to enhance their business and their environment. From a steel mill services provider in the company’s earliest years, we have grown into a comprehensive, vertically integrated company with continued focus on innovative and timely responsiveness to customer needs, products and services of superior quality, and a dedication to preserve, protect, and enhance the world around us.

The family-owned company was founded in 1946. Ernst Enterprises knows the value of a solid foundation. Operating as Ernst Concrete, Ernst Enterprises, Inc. makes and distributes ready-mix concrete and related products in Georgia, Indiana, Kentucky, and Ohio. Ernst Enterprises, Inc. also provides concrete pumping services for residential, industrial, commercial, and government clients. Ernst Enterprises makes standard concrete mixes as well as custom and specialty products at the approximately 30 plants it operates. Other products sold include trowels, marking implements, and other finishing tools; concrete nails, cures, and stains; and general construction supplies. The firm also sells used mixers to other concrete suppliers.

Founded in 1866 by David Saylor as Coplay Cement, the company is now a part of the Italian cement and building materials group, Italcementi. Essroc Cement likes to mix it up. The company operates about a dozen cement plants and other facilities in the US, Canada, and Puerto Rico, and has an annual capacity of more than 6.5 million metric tons of cement. Essroc makes bulk and packaged cement products, including portland cement, ready mix concrete, and masonry cement. Its AXIM Concrete Technologies subsidiary creates concrete admixtures used to improve the performance quality of cement. Essroc's brands include BRIXMENT, Saylor's PLUS, and VELVET masonry. Its BRAVO line includes masonry chemical products.

Fairmount Minerals is responsible for a fair amount of the minerals mined in the Midwest. Operating through several divisions and subsidiaries, Fairmount Minerals, Ltd. is one of the United States' largest producers of industrial sand used for construction, metal casting, glass, landscaping, oil and gas stimulation, filtration, abrasives, and filler. Products include silica sand, resin-coated sand, lake sand, and other specialty sands, including those used in pool filters, golf course bunkers, and children's sand boxes. Fairmount Minerals has operations in seven states (primarily in the Midwest) and in Canada, Mexico, and China, 11 mining and mineral processing facilities and seven manufacturing plants.

General Engineering lays the groundwork for a customer's business. The company manufactures prefabricated concrete building materials and distributes construction goods made by other manufacturers. Products include precast concrete forms, bridge bearings, and expansion joints. The company's core products are its prestressed concrete pilings. Designed for the moist climate and soft soil of Thailand, its pilings are used in the foundations of highways, factories, power plants, and other structures. General Engineering also produces industrial grout and rapid hardening concrete under a license from Japan-based Denki Kagaku Kogyo Kabushiki Kaisha. Customers include the Thailand Department of Highways.

Established in 1954, Geneva Rock Products, Inc. has become one of the most respected and experienced contractors in the state of Utah. As the largest supplier of ready-mix concrete in the state, Geneva Rock strives to offer customers a wide range of construction services and products. From aggregate materials to asphalt paving, Geneva Rock is dedicated to successfully finding the right solution for every job. Based in Orem, Utah, there are many Geneva Rock locations throughout the Wasatch Front with ready mix concrete plants and Sand and gravel/decorative landscape operations to serve the construction community. Geneva Rock services also include capabilities in construction, handling utilities, excavating, and asphalt paving.

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