Founded in 1914 and now in its fourth generation of family ownership and management, the Barletta companies'​ headquarters is in Canton, Massachusetts. Its two construction entities perform different categories of work. Barletta Engineering Corporation constructs water and sewage treatment facilities, gas-fired and renewable energy power plants, green roofs and spaces, and commercial buildings. Barletta Heavy Division, Inc. is focused on work such as airports, roads, highways, bridges and tunnels, public transportation projects, railroad and light rail tracks, landscaping, environmental remediation, sitework and utilities. Barletta companies have a professional staff of 90, and are signatory to Labor Agreements with the Unions representing Laborers, Carpenters and Operating Engineers. Barletta companies have a fleet of over 300 pieces of equipment, and are prequalified by the Massachusetts Highway Department, Department of Conservation and Recreation, the Division of Capital Asset Management, and the Massachusetts Bay Transportation Authority. There are few firms in today's construction industry with the level of experience and longevity that the Barletta companies enjoy. By combining strong project management with the latest technological advances and cutting edge construction methods, the Barletta companies have established a reputation for safely completing projects to specification while meeting time and budget constraints.

Gemma Power Systems, a wholly owned subsidiary of Argan Inc. (NYSE: AGX), is a leading Engineering, Procurement and Construction (EPC) company providing innovative solutions for the power and renewable energy industry. Our wide-ranging and comprehensive experience comprises 14,500 MW installed capacity including combined cycle and simple cycle gas turbine plants, biomass projects, solar facilities, wind farms, biofuel plants and environmental facilities. Gemma Power Systems also provides operations and maintenance services for your completed facility. "Built by Gemma"​ is our commitment that our customers, the communities and all stakeholders will have a great project experience. Gemma Renewable Power (GRP) specializes in the construction of utility scale wind and solar projects. Since its inception, GRP has successfully completed power projects reaching from Massachusetts to Washington State. Additional information about Gemma Power systems can be found at www.gemmapower.com

Reed & Reed is a heavy civil General Contractor located in Woolwich, Maine. We perform work throughout New England focusing on bridges, wind power, marine work, pile driving and parking garages! We're an innovative group always looking to improve instructure and provide great jobs and benefits.

Founded in 1987, NEL Corporation is a Massachusetts based General Contractor specializing in bridge, site, marine, concrete and facilities construction. Our emphasis is on the rehabilitation and maintenance of existing structures. We have a solid reputation for quality work, safe working conditions and professional management and we honor our commitment to quality workmanship.

Complex building systems demand technically advanced solutions. As the holding company for Arden Engineering Constructors, MJ Daly, Unique Metal Works, and Corporate Mechanical of New England, Arden Building Companies provide a robust skill set that covers a wide range of services including: engineering design, mechanical construction and maintenance services, electrical construction, sheet metal fabrication, sprinkler construction and service, and co-generation “green” energy. Our resources run deep and our ability to listen to our customers and create financially and energy efficient solutions keep us the one-stop provider of mechanical building solutions in New England.

Tioga Construction specializes in public transportation and infrastructure projects across upstate New York. With experience in Bridge, Road, Rail, Marine and Environmental projects, Tioga has the people, expertise, equipment and materials to get the job done safely and on time.

C. H. Nickerson & Company, Inc. is a full-service general contracting and design/build service provider founded in 1939. Since the 1950's the company has specialized in environmental construction throughout New England, however the firm's experience is both extensive and diverse, covering a wide range of markets: Municipal, Commercial, Institutional and Industrial. Typically C.H. Nickerson self-performs the majority of its projects, providing all site work — concrete, masonry, carpentry, equipment installation, and process piping — with its own forces.

The O’Connor Corporation is committed to building long-term relationships with our clients based on performance, integrity, safety, and customer satisfaction. We continue to meet the evolving needs within our industry by employing the most qualified and dedicated project managers, professional millwrights, and boilermakers. Our highly trained team continuously strives to meet or exceed our customers’ expectations. The O'Connor Corporation services the following industries: Power Generation Maintenance and Construction, Water and Wastewater, Moveable Bridges, Material Handling, Pulp & Paper, and Precision Mechanical Alignments.

JC&A is a leader in providing construction management and preconstruction services in the, corporate interiors, life sciences, advanced technology, academic, healthcare, and commercial markets in the Northeast. For 27 years, our strategic thinking, proactive approach, and commitment to clients and the communities in which we live has made us a leader in the industry and attracted high-profile clients, including Amazon, Boston Dynamics, Boston Properties, Biogen, Atlantic Management, Children’s Hospital, Anchor Line Partners, Salesforce, Constant Contact, Sanofi Genzyme, and Parexel International to name a few. JC&A has received a Boston Business Journal Citizenship award for its philanthropic efforts for sixteen consecutive years and consistently been named as “A Best Place to Work” honoree. For more information, please visit https://jcalnan.com/.

Established in 1969, J.H. Maxymillian, Inc. is a Berkshire-based family owned business with over five decades of construction experience in the New England area. The firm is well regarded industry-wide for its technical capabilities, professional project management and consistent performance. With fifty years of continuous operation and thousands of jobs under our belt, each and every day we’re proud to serve New England and the Northeast region with the highest level of construction expertise, quality, and customer satisfaction. Our extensive equipment fleet, coupled with comprehensive experience, consistently results in safe, effective, turnkey construction of challenging sites. As a result of our expansive resources, we self-perform major work tasks, allowing us to maintain tight control over the project schedule and costs with minimal disruption to the surrounding community. As our many repeat clients will tell you, when you hire Maxymillian you get an unwavering commitment to a job done well. Our capabilities include: • Earth Work • Bridge Construction, Replacement and Reconstruction • Geotechnical- Earth Support Systems • Highway, Road and Streetscape Construction • Form and Concrete Work • Environmental Remediation • Dam Construction and Rehabilitation • Demolition & Dismantlement • Site Work and Development • Spill Response

McCourt Construction is a large, diversified General Contractor headquartered in Boston, MA. Since our founding in 1893, we have focused on building the Northeast’s most complex civil projects. The company is organized into a Heavy Civil Division focused on improving our nation’s infrastructure and an Energy Division dedicated to expanding America’s electric, gas, and steam networks. Fifth-generation McCourt brothers lead McCourt Construction, and with over 130 years of managing construction projects, we have built a book of business unmatched in the Northeast. We pride ourselves on working for New England’s most demanding clients, ranging from the Federal Government to state transportation agencies, gas & electric utilities, and the world’s most elite universities and hospitals. Dedicated to building the Northeast, our team comprises hundreds of skilled craft employees backed by 90 salaried staff. Among them are committed and talented construction professionals, engineers, surveyors, and our in-house Safety Department. Our fleet of equipment, valued at tens of millions of dollars and comprised of fully-owned machinery, is diligently maintained by our mechanics stationed at our Boston maintenance facility. We are excited to continue to develop our workforce and build on our expertise to uphold our reputation as New England’s premier heavy civil contractor.

R.J. Grondin & Sons is a third generation, family owned earth moving business located in Gorham, Maine, with operations in Southern and Central Maine. The company, which was once a successful dairy farm business in the late 1950s, has evolved into one of the premier construction companies in Northern New England.