St. Lawrence Seaway
This shows the approach to the St Lawrence Seaway which gives access to 15 Canadian and US ports. Officially opened in 1959, the canal system is closed from mid-December to early April. The St. Lawrence Seaway is said to support around 40,000 jobs and produce $2 billion income,and the cargo brought along the system supporting a vast range of industries. Steel, iron ore, grain and coal are the main commodities handled by the system.