From: https://en.wikipedia.org/wiki/Hull%E2%80%93Rust%E2%80%93Mahoning_Open_Pit_Iron_Mine
The Hull–Rust–Mahoning Open Pit Iron Mine in Hibbing is the largest operating open-pit iron mine in Minnesota. The pit stretches more than three miles (5 km) long, two miles (3 km) wide, and 535 feet (163 m) deep. It was established in 1895 and was one of the world's first mechanized open-pit mines.
The mine, located in the Mesabi Range, supplied as much as one-fourth of all the iron ore mined in the United States during its peak production from World War I through World War II. This prodigious output made Minnesota the nation's largest iron ore producer and the U.S. the world's largest steel manufacturer.
Since 1976, the mine has been operated by Hibbing Taconite Company (HibTac for short). Iron-bearing taconite pellets are produced at the rate of 8.2 million tons annually (not counting tailings, waste rock, or overburden). Hibbing Taconite was initially managed by Pickands Mather on behalf of owners Bethlehem Steel and Stelco. ArcelorMittal assumed the role of a managing partner in August 2019. On September 28, 2020, ArcelorMittal sold its U.S. business to Cleveland-Cliffs Inc. for about $1.4 billion.[9] As of 2021 the company is managed by Cleveland-Cliffs, with ownership divided between Cleveland-Cliffs (85.3%), and U.S. Steel (14.7%).
The Hull–Rust–Mahoning Open Pit Iron Mine in Hibbing is the largest operating open-pit iron mine in Minnesota. The pit stretches more than three miles (5 km) long, two miles (3 km) wide, and 535 feet (163 m) deep. It was established in 1895 and was one of the world's first mechanized open-pit mines.
The mine, located in the Mesabi Range, supplied as much as one-fourth of all the iron ore mined in the United States during its peak production from World War I through World War II. This prodigious output made Minnesota the nation's largest iron ore producer and the U.S. the world's largest steel manufacturer.
Since 1976, the mine has been operated by Hibbing Taconite Company (HibTac for short). Iron-bearing taconite pellets are produced at the rate of 8.2 million tons annually (not counting tailings, waste rock, or overburden). Hibbing Taconite was initially managed by Pickands Mather on behalf of owners Bethlehem Steel and Stelco. ArcelorMittal assumed the role of a managing partner in August 2019. On September 28, 2020, ArcelorMittal sold its U.S. business to Cleveland-Cliffs Inc. for about $1.4 billion.[9] As of 2021 the company is managed by Cleveland-Cliffs, with ownership divided between Cleveland-Cliffs (85.3%), and U.S. Steel (14.7%).
© David D. Dolton