Source: Great Lakes & Seaway Shipping Online
Stelco Inc., which Hamilton facilities are shown in this photo, was one the largest steel company in Canada. It was in operation from 1910 up to 2010 when it ceased making steel. It moved each year about 7.5 million tons of coal and ores over the St. Lawrence Seaway. No other means of transportation have the capacity or would be cheap enough to carry this quantity of bulk freight.