Skanska USA Building Inc., one of four US-based units of the Swedish construction giant Skanska AB, the company is one of the nation's top general contractors and construction groups. Offerings include pre-construction consultation, design-build, and construction management. It serves sectors ranging from infrastructure, sports and entertainment, education, and health care. The company also provides specialist validation services for pharmaceutical and biotech customers. Skanska's other US companies are Skanska USA Civil, Skanska Infrastructure Development, and Skanska Commercial Development.

Fred Weber weaves a web of heavy and highway construction services, including site work, bridge building, paving, sewers, and grading. Its history includes work on a section of Route 66 noted for having the largest vertical rock cut ever completed in Missouri. Fred Weber's construction materials segment (asphalt, crushed stone, sand, landfill, and compost) includes subsidiaries Quality Sand, Bluff City Minerals, Iron Mountain Trap Rock, and EZ Street Cold Asphalt. It operates quarries, sand plants, and asphalt plants. The company was founded by Fred Weber Sr. in the 1920s. Employees purchased the company from the Weber family in 1980.

Ash Grove Cement is a pioneer in the US cement industry. Tracing its roots back to 1882, the company is one of the largest cement manufacturers in North America. Ash Grove Cement's products include portland and masonry cements used in roads, bridges, and buildings, as well as ready-mix concrete. The company operates nine plants with an annual capacity of some 9 million tons of cement; it also operates aggregate quarries in the US and Canada and a lime plant in Oregon. Other operations include Ash Grove Packaging, which offers packaged materials such as sealers and additives, caulks, and stucco. Lester T. Sunderland joined Ash Grove Cement in 1909; his heirs own the company.

Amcol International Corporation focuses on the development and application of minerals and technology products and services to various industrial and consumer markets worldwide. AMCOL International Corporation operates in four segments: Minerals and Materials, Environmental, Oilfield Services, and Transportation. The Minerals and Materials segment mines, processes, and distributes minerals and products with applications for use in various industrial and consumer markets, including metal-casting, pet care, detergents, iron ore pelletizing, and drilling industries. The Environmental segment processes and distributes minerals, products, and services with applications for use as a moisture barrier in commercial construction, landfill liners, and various other industrial and commercial applications. The Oilfield Services segment provides both onshore and offshore water treatment filtration, pipeline separation, waste fluid treatment, nitrogen, rental tools, coil tubing, and well testing data services for the oil and natural gas industry. The Transportation segment includes both a long-haul trucking business and a freight brokerage business for domestic subsidiaries, as well as third parties. AMCOL International Corporation was founded in 1924 and is headquartered in Hoffman Estates, Illinois.

Elkay Manufacturing. Elkay makes sinks, cabinets, countertops, drinking fountains, faucets, water coolers, and water filtration products for reidential and commercial use. The family-owned company sells products such as stainless steel sinks under such names as Harmony, The Mystic, and Elite Gourmet. It also offers kitchen accessories (colanders, cutting boards, soap dispensers). Elkay's cabinet brands include Yorktowne, Medallion, Schuler, and MasterCraft. Elkay is the parent of a dozen privately held companies and one joint venture, Elkay Pacific Rim. The company was founded in 1920 by the Katz family to make sinks for butlers' pantries and sculleries.

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.

United Subcontractors, Inc. (USI) insulates its customers from the harsh conditions of the great outdoors. The company, which was founded in 1998, installs residential and commercial insulation systems in more than 150,000 homes and buildings annually. In addition to new residential projects, the company provides services for commercial construction. It also offers building products including shelving, fireproofing, garage doors, flooring, windows, glass, and paneling. USI has some 35 US locations. A downturn in the construction and new home building market forced USI to file for Chapter 11 bankruptcy protection in 2009. It emerged from bankruptcy later that year.

Market & Johnson provides commercial construction and general contracting services in western Wisconsin. It offers a full range of services ranging from the planning and preliminary design stages through delivery and maintenance. The company operates in the industrial, commercial, government, health care, religion, and education markets. Projects range from large buildings to small remodeling jobs. Juel Market and Milt Johnson founded the company as a home builder in 1948. Today Market & Johnson is owned by a group of five principal managers including CEO Dan Market.

CIMPOR was created in 1976 as a state-owned entity, but the government of Portugal sold the last of its stake in 2001. CIMPOR - Cimentos de Portugal finds it easy to be hard. CIMPOR is Portugal's largest cement manufacturer and one of the largest on the Iberian Peninsula. The company produces and markets more than 31 million tons of cement around the world each year. CIMPOR also produces aggregate, concrete and precast concrete products, hydraulic lime, and dry mortars. The company operates in about a dozen countries in Europe, Africa, Asia, and South America; about half of its cement is manufactured in Spain and Portugal.

Architects Delawie Wilkes Rodrigues Barker (A|DWRB) has designs on the Southern California market. A|DWRB provides design/build architectural services that range from analysis (including due diligence, code analysis, and site analysis of existing conditions to determine specific use suitability of a site or building) to master planning and interior design services. Its portfolio includes designs for biotech and advanced technology firms, educational facilities, and hospitality projects. A|DWRB, which was founded in 1961, focuses on projects in Southern California, but has also served clients around the globe.

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