It was formed in 1911 from the merger of Surveyer, Nenniger & Chenevert Consulting Engineers (SNC) and Lavalin, another Québec-based engineering firm.
It was formed in 1911 as Surveyer, Nenniger & Chenevert Consulting Engineers (SNC). In 1991 the company merged with Lavalin, another Québec-based engineering firm.