 The Montreal Oil Refining Centre is the largest refining centre in Canada, with companies like Petro-Canada, Ultramar, Gulf Oil, Petromont, Ashland Canada, Parachem Petrochemical, Coastal Petrochemical, Interquisa (Cepsa) Petrochemical, Nova Chemicals, and more. Shell decided to close the refining centre in 2010, throwing hundreds out of work and causing an increased dependence on foreign refineries for eastern Canada.
