At one time, the entire inner harbour waterfront was used as a transfer station for cargo, with rail lines connected directly to the wharves. Changes in mode of transport and relocation of factories have meant the port transfers a relatively small amount of cargo today and is not a significant cargo port. The tonnage of cargo passing through the port is made up mostly of sugar to the Redpath refinery and aggregate materials such as sand, gravel and salt. In 2015, the port received 1.7 million tonnes of cargo, 36th-largest in Canada. By comparison, Colborne, Ontario shipped 1.671 million tonnes while Hamilton handled 13.66 million tonnes. Total tonnage handled in Canadian ports was 466.148 billion tonnes.