Haynes Construction Company, celebrating over 60 years in business, is a second generation firm founded in 1962. HCC has been providing general contracting and construction management services for many repeat clients and establishing strong working relationships with new clients in both the private and public sectors. HCC subcontracts all trades while managing the entire project ourselves. We are well recognized for our work in the academic, institutional, residential, criminal justice, healthcare, infrastructure and retail markets. But most importantly is our commitment and history of building affordable housing for nonprofit groups with more than 7000 units completed. At Haynes Construction Company we extend our services throughout the entire state of Connecticut including Seymour, New Haven, Southbury, Middletown, Hartford, Farmington, Fairfield, Manchester, New London, Newtown, Hamden as well as cities throughout Litchfield, Tolland and Windham Counties.

Since 1890, Massachusetts Broken Stone has manufactured high quality construction aggregate for use in projects up and down the east coast. In addition to manufacturing, we also offer Commercial & Residential asphalt paving services throughout Worcester, Middlesex, Norfolk, & Suffolk County.

Marmiro Stones® is an industry vanguard servicing both residential and commercial clientele. Our office, design studios, customized fabrication shop, and warehouse are all under one inclusive roof. This unique industry practice empowers us to effectively control every aspect of our business. From Turkey, where our own quarries and manufacturing plants have been since 1959, to our modern facilities in the New York City metropolitan area we deeply care about our trademarked hardscape and interior products. Family owned and operated we employ knowledgeable like-minded people. Marmiro Stones® is committed to high-level creative professionalism. Our products are more than just blocks of stone; they are a passionate part of us. When building long lasting relationships with clients, our family-like culture grows exponentially because our products become a part of their daily lives. We refer to our employees as our "Chosen Family"​. Marmiro Stones® would like to be an extension of your home, and be your “Chosen Stone”.

HUDSON QUARRY CORPORATION is a retail company based out of 6 CANDY LN, Hudson, New Hampshire, United States.

E W SYKES GENERAL CONTRACTORS is a mining & metals company based out of PO BOX 178, Athol, Massachusetts, United States.

ST. PIERRE, INC. is a company based out of 59 JEFFREY ROAD, CHARLESTOWN, New Hampshire, United States.

Incorporated in 2004, Best Machine was founded as a specialty shop designed to meet high surface finish specifications essential for conductive heat transfer components required for test equipment in the semiconductor industry. We have since grown our business and expanded our manufacturing capabilities to meet customer demands in a variety of fields including medical, industrial, aerospace, defense and instrumentation. We now operate out of our own 6,500 sq/ft facility built in 2010, located in Fremont NH.

DESIATO SAND & GRAVEL CORPORATION is a company based out of 999 STAFFORD ROAD, STORRS, Connecticut, United States.