Piles of Taconite, a form of iron ore pellets used in the production of steel. July 23, 2024 2000 × 1333 Don’t Adjust Your Set…. Piles of Taconite, a form of iron ore pellets used in the production of steel. Seen at the Algoma Steel Company plant located on the St. Marys River in Sault Ste. Marie, Ontario Canada