O&G Industries Inc. in Torrington, Conn., has been active in state and regional construction since Andrew Oneglia founded the company in 1923, with family ownership and leadership now in the fourth generation and with many multigenerational staff. “The combination of long-tenured employees and emerging talent gives us both stability and momentum,” says the firm, now diversified into heavy contracting, complex project management and materials production, with strengths in transportation, education, health care, commercial and industrial markets. O&G ranks at No. 159 on ENR’s national list of Top 400 Contractors, reporting $830.5 million in 2025 construction revenue, and at No. 30 among ENR East Top Contractors with $668.68 million in 2025 regional revenue, up 46.59% from the prior year. O&G says it targets market demand for lower-carbon buildings and infrastructure, forming a link with Urban Mining Inc. to substitute standard cement using a patented concrete additive made from locally recycled glass that cuts emissions. Its community involvement includes Crew for a Cause, an employee-driven charitable giving effort that has provided more than $1 million to local groups and projects since 2023. The firm now has seven fourth-generation members as company managers. One of those, Thomas J. “T.J.” Oneglia, vice president of construction materials, outlined the firm’s strategic approach in a Q&A that has been edited and condensed.

https://www.enr.com/articles/63337-at-age-103-o-and-g-still-is-next-gen-contractor