Taconite loading slowed in Duluth

The recent cold weather slowed the loading of taconite (low-grade iron ore) from area docks and resulted in about nine ships being anchored in Lake Superior outside the Duluth harbour, waiting their turn to load in the Twin Ports or Two Harbors before the closing of the Soo Locks for the season on January 15th. Because of the cold, loading times had apparently increased from the usual eight to ten hours to as much as 24 hours.

http://kdal610.com/news/articles/2018/jan/03/ships-at-anchor-outside-harbor-waiting-to-load/