—SEC. 05 — Professional Services
Professional Services
— SEC. 01
Listings
Listings
All links in this category.
Showing 1–4 of 4 editor-approved links.
Professional_Services
Parsons Brinckerhoff Inc.
www.pbworld.com
Founded in 1885. Major practice areas in energy, environmental and facilities engineering. Over 200 offices worldwide.
Added May 10, 2026
Professional_Services
O'Brien & Gere
www.obg.com
Provides start-to-finish project services with engineering design, construction, contract operations, laboratory analysis, and manufacturing, internationally.
Added May 10, 2026
Professional_Services
Patterson/Bach Communications
www.pat-bach.com
Marketing firm serving the engineering and construction industries.
Added May 10, 2026
Professional_Services
J. D. Hair & Associates, Inc.
www.jdhair.com
Specializes in projects involving the installation of buried utilities by trenchless construction methods. Based in Tulsa, Oklahoma.
Added May 10, 2026