CEMEX de Puerto Rico makes cement in Puerto Rico. Shocking, but true. Formerly Puerto Rican Cement Company (PRCC), the company operates a cement plant and about 20 ready-mix facilities, an aggregates quarry, and two land distribution centers in Puerto Rico. CEMEX de Puerto Rico serves cement customers throughout the island, but its ready-mix operations are concentrated in the eastern part of the island; it has an installed capacity of about 1.2 million tons a year. Its parent company, Mexico-based giant CEMEX, operates primarily in North America and Europe, but has customers throughout the world.

All Star maintains home and hearth for bronze stars, silver stars, and gold stars. The company started out in 1983 providing and maintaining military housing for the US armed forces, but it has branched out into military base operating support, facility operation and maintenance, family housing maintenance, and minor construction services. It provides services through locations in the US and Guam, Germany, Italy, and Korea. All Star also provides fleet maintenance and logistic services including supply management, transportation, and warehousing. The company's customers include the US Navy, Army, Air Force, Marine Corps, and Coast Guard. President and CEO John Junge owns All Star.

The largest division in the group, Lindum Construction, specializes in building food manufacturing facilities, retail space, hospitals, and offices. The Lindum BMS unit provides services in areas such as commercial, retail, design, and remodelling, and is also involved in building services maintenance. Lindum Homes builds residential houses in the Lincolnshire area, and Lindum Security develops security monitoring systems. The company was founded in 1956 by John Chambers, father of chairman David Chambers.

Ground Construction Ltd. (GCL) isn't afraid to get a little dirty on the job. GCL subcontracts with UK property developers to ready land sites and construct building foundations. The firm handles site preparation from demolition, excavation, and groundworks to drainage and concrete frames, primarily in London and the home counties. It has completed more than 200 industrial, office, academic, and residential projects. Founded in 1997, the company has been in on the ground floor (so to speak) of such projects as Gainsborough Studios, London; Lambeth College, London; and Broadway House, Wimbledon.

Engineering and consulting firm KEMRON Environmental Services provides analytical testing, consulting, emergency response, environmental assessment and engineering, geotechnical testing, and site remediation. Customers include branches of the US military and other federal agencies. Its client base also includes private sector companies ranging from small businesses to major manufacturers and FORTUNE 500 companies. KEMRON operates from offices in Georgia, Illinois, Ohio, Virginia, Washington, and West Virginia. The company is owned by its employees.

Petrocelli Electric keeps the city that never sleeps wired. Founded in 1933, the contractor installs and maintains electrical, communications, and lighting systems for commercial, institutional, and public sector clients in the New York City metropolitan area. Its activities include project management, electrical engineering, and design-build services such as developing electrical distribution and communications systems, installing generators and fiber-optic cables, and laying underground feeder cables. In 2009 former owner Santo Petrocelli Sr. pleaded guilty to charges that he made illegal payments to a union official.

Cementos Portland Valderrivas is 67%-owned by construction firm Fomento de Construcciones y Contratas. Cementos Portland Valderrivas has built a business on a strong foundation. The company, founded in 1903, produces some 18 million tons of cement and clinker (an intermediate product used to make portland cement) annually at 15 plants in Spain, the US, South America, Africa, and Europe. Its acquisition of 64% of Corporacion Uniland cemented its position as the #1 cement producer in Spain. In the eastern US, the company makes and distributes cement, gravel, and sand through Giant Cement Holding. It also produces concrete, operates lime factories, and has transportation companies.

Weston Solutions, Inc.,the environmental consulting and engineering firm focuses on infrastructure redevelopment, including site assessment and remediation, water and wastewater consulting, and permit and compliance management. Weston Solutions provides services from 60 offices worldwide, mainly to US government agencies, industrial clients, and state and local governments. It identifies and resolves problems such as soil and water pollution and hazardous waste and provides decontamination and decommissioning services. Weston Solutions, which was established in 1957, is owned by its employees.

Cavco Industries, Inc. engages in the design, production, wholesale, and retail marketing of manufactured homes. It produces single-section and multi-section homes, park model homes, vacation cabins, and HUD code manufactured homes, as well as commercial structures for various purposes, including offices and showrooms. The company sells its manufactured homes through a network of retailers in the continental United States under Cavco Homes and Fleetwood Homes brand names. The company was founded in 1965 and is headquartered in Phoenix, Arizona.

The Holland Roofing Group installs commercial and industrial roofing systems for clients throughout the midwestern and southeastern regions of the US. The company's services include new construction; roof replacement, repair, and maintenance; and roof coatings. Holland Roofing operates from locations in Florida, Indiana, Kentucky, Ohio, and Tennessee. President Hans Philippo founded Holland Roofing in 1986.

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