SUGAR LAND, TX (MARKET WIRE) Researched by Industrial Info Resources (Sugar Land, Texas) -- Valero Energy Corporation (NYSE: VLO) (San Antonio, Texas) has selected contractors to construct a $200 million, 100-million-standard-cubic-feet-per-day hydrogen plant at the company's refinery in California. SNC-Lavalin (TSX: SNC) (Montreal, Quebec) is one of several companies that were selected. ...