https://www.metro-magazine.com/articles/parsons-brinckerhoff-1
Parsons Brinckerhoff | Metro
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https://www.waterworld.com/home/article/16217367/balfour-beatty-to-acquire-parsons-brinckerhoff
Balfour Beatty to acquire Parsons Brinckerhoff | WaterWorld
Balfour Beatty, the international engineering, construction, investment and services group, announces today its intention to acquire Parsons Brinckerhoff Inc.,...
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https://trenchlesstechnology.com/bechtel-parsons-brinckerhoff-reach-settlement-on-big-dig/
Bechtel & Parsons Brinckerhoff Reach Settlement on Big Dig — Trenchless Technology
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