Energy Maintenance Services Group I (EMS) is a one-stop shop for pipeline services in North America. The company's service offerings include compressor and meter station construction, corrosion surveying, environmental analysis, pipeline laying, and repair to major oil and gas producers, pipeline operators, local distribution companies, and independent power and utility operators in the US, Canada, and Mexico. It also operates and maintains about 25 pipelines and facilities throughout the US. Additionally, it supplies products such as valves and fittings and high-performance materials that help strengthen or protect pipes. Founded in 2003, EMS is one of the fastest growing privately-held companies in Houston.

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.

High Industries is at the top of its game, and that game is steel and construction. The company's largest division, High Steel Structures, is one of the largest steel bridge fabricators in North America. Other members of the High Industries' stable of companies include High Steel Service Center (metal processing and distribution), High Concrete Group (precast concrete components), and High Safety Consulting Services (air quality and safety). Affiliates of High Industries, such as High Hotels, are active in the real estate business. High Industries, which mostly does business along the East Coast, traces its roots to a welding shop founded by Sanford High in 1931. The company is controlled by the High family.

ESTec Systems is on the job. Through its Allan R. Nelson Engineering subsidiary, the company provides mechanical engineering (including fire investigations) and forensic engineering services (failure analysis and reporting for criminal and civil investigations and court cases) to the petrochemical, manufacturing, and drilling industries. It provides mechanical design, repair, construction, measurement, and certification services to oil, gas, mining, and construction companies from North and South America to Russia. ESTec also performs billing analysis for insurance companies investigating industrial accidents. The company was formed in 1989.

Garcia Roofing provides a full range of contracting services for commercial and government projects throughout the US and abroad. It is one of the largest roofing companies in Kern County, California. It also has been expanding to include worldwide roofing services and continues to land international projects. The company has government clearance for projects and often works on federal buildings or US embassies overseas. Garcia Roofing is owned by president Michael Garcia, who founded the company in 1975.

Pacific National Group (PNG) performs general contracting and construction management services in Arizona and Southern California. The company tackles a range of projects, including commercial and industrial complexes, medical buildings, high-tech and aerospace centers, and sports and recreation facilities. The company offers pre-construction through post construction services as well as site supervision. Its Modulex division manufactures aluminum door frames and glazing systems. PNG's client roster includes Northrop Grumman, Cedars-Sinai Medical Center, Universal Studios, and the Jet Propulsion Laboratory in Pasadena, California. The company was founded in 1959 as Pacific Luminaire.

Stericycle, Inc., together with its subsidiaries, provides regulated waste management and related services in the United States, Canada, Argentina, Chile, Mexico, Ireland, Portugal, Romania, and the United Kingdom. The company offers various services, which include Bio Systems sharps management services that reduce the risk of needle sticks; various products and services for infection control; Steri-Safe Occupational Safety and Health Act and Health Insurance Portability and Accountability Act compliance programs; and regulated returns management services for expired or recalled products. It serves large-quantity generators of regulated waste, such as hospitals, and pharmaceutical companies and distributors, as well as small-quantity generators of regulated waste, such as doctors’ offices and retail pharmacies. Stericycle, Inc. was founded in 1989 and is based in Lake Forest, Illinois.

Downer EDI works to keep things working. The company provides engineering and infrastructure management for public and private entities throughout Australia, New Zealand, Asia, and the Pacific. The company strives to be a "one-stop" provider for engineering services that include design, project and facilities management, operations, consulting, and maintenance. The company is organized along five divisions representing its primary activities: infrastructure services through Downer EDI Works, Downer EDI Engineering, Downer EDI Mining, Consulting Services, and Downer EDI Rail. Although the company's footprint covers the Asia/Pacific region, Downer EDI's Australian operations account for about 70% of its revenue.

KPA Associates offers consulting and services related to the design, construction, and reconstruction of buildings of all types. The firm, which traces its roots back to architecture and design firms Bayless Cobb & Associates (founded in 1976) and Klock Planning Architecture (founded in 1977), became an employee-owned company in 1996. It specializes in architectural design, construction consulting, and forensic architecture (litigation consultation and expert witness services on construction defect and personal injury cases) services.

Corna Kokosing provides general contracting services for commercial, industrial, institutional, and health care construction projects, primarily in central Ohio. Services include construction management, design/build, and finance services for new construction and renovations. The company also performs construction services ranging from carpentry and drywall installation to metal building erection and demolition. Stonemason Al Corna and carpenter Joe DiCesare co-founded the company in 1956. Midwest heavy construction group Kokosing Construction acquired Corna Kokosing 40 years later.

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