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United States
United Taconite Mine (U.S. Iron Ore Operation)

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 Location:
12 km S from Eveleth, Minnesota, United States

  Address:

P.O. Box 180
Eveleth
Minnesota, United States
55734
Phone  ...  Subscription required
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Iron Ore
Mining Method
  • Truck & Shovel / Loader
Processing
  • Magnetic separation
  • Rotary kiln & Electric furnace
Mine Life40 years (as of Jan 1, 2019)


Owners

Source: p. 4,41
CompanyInterestOwnership
Cleveland-Cliffs Inc. 100 % Indirect
United Taconite LLC operates as a subsidiary of Cliffs Inc.

Deposit Type

  • Sedimentary
  • Banded iron formation


Summary:

The United Taconite mine is located on Minnesota's Mesabi Iron Range.

The Mesabi Iron Range is a mining district in northeastern Minnesota following an elongate trend containing large deposits of iron ore. It is the largest of four major iron ranges in the region collectively known as the Iron Range of Minnesota.

There are three iron ranges in northern Minnesota, the Cuyuna, the Vermilion, and the Mesabi. Most of the world's iron ore, including that contained in northern Minnesota, was formed during the middle Precambrian. During this period, erosion leveled mountains. This erosion released iron and silica into the waters of a new sea. Marine algae living in this new sea raised the level of atmospheric oxygen. This oxygen catastrophe caused the eroded iron to precipitate into the banded iron formations found in northern Minnesota and other members of the Animikie Group. Over billions of years, geological forces left behind ore deposits of varied quality and concentrations – differences that would determine how the ore was mined from place to place. On the Mesabi Range, stretching 100 miles (160 km) from Grand Rapids to Babbitt, soft ore lay close to the surface, where it could be scooped from open pit mines.

The overall structure of the range is that of a monocline dipping 5 to 15 degrees to the southeast. Key faults include the Calumet, La Rue, Morton, Biwabik, and the Siphon. The Duluth Gabbro complex to the east has caused metamorphic changes in the Biwabik formation. The natural iron ores and the magnetite taconites occur in this Precambrian Biwabik formation, which is a cherty layer 340–750 feet (100–230 m) thick. The natural ores are located in elongated channels or tabular deposits, while the magnetite taconites occur in stratigraphic zones. Natural ores have an iron content of 51 to 57 per cent while the pellets contain 60 to 67 per cent. The natural ores are mainly mixtures of hematite and goethite.


Mining Methods

  • Truck & Shovel / Loader


Summary:

The United Taconite mine is located on Minnesota’s Mesabi Iron Range in and around the city of Eveleth, Minnesota. The United Taconite concentrator and pelletizing facilities are located ten miles south of the mine, near the town of Forbes, Minnesota. In 2020, the United Taconite mine produced 5.2 million long tons of iron ore pellets.

United Taconite operations consist of an open pit truck and shovel mine where two stages of crushing occur before the ore is transported by rail, operated by CN, to the plant site.


Crushing and Grinding


Processing

  • Magnetic separation
  • Rotary kiln & Electric furnace

Source: Subscription required

Summary:

The concentrator utilizes rod mills and magnetic separation to produce a magnetite concentrate, which is delivered to the on-site pellet plant. From the plant site, pellets are transported by CN rail to
a ship loading port at Duluth, Minnesota, operated by CN.

Recoveries & Grades:

CommodityParameter201920182017201620152014
Iron Ore Recovery Rate, %  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Production:

CommodityUnits201920182017201620152014
Iron Ore M long tons  ......  Subscription required5.24.81.53.14.9
All production numbers are expressed as pellets.
Subscription required - Subscription is required.

Operational Metrics:

Metrics201920182017201620152014
Annual production capacity  ......  Subscription required5.4 M long tons of iron ore pellets5.4 M long tons of iron ore pellets5.4 M long tons of iron ore pellets5.4 M long tons of iron ore pellets5.4 M long tons of iron ore pellets
Subscription required - Subscription is required.

Reserves at December 31, 2018:

CategoryTonnage CommodityGrade
Proven 398.9 M long tons Iron (magnetite) 22.5 %
Probable 415.5 M long tons Iron (magnetite) 21.9 %
Proven & Probable 814.4 M long tons Iron (magnetite) 22.2 %


Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Mar 2, 2021
....................... Subscription required ....................... Subscription required Subscription required Mar 2, 2021
....................... Subscription required ....................... Subscription required Subscription required Mar 2, 2021
....................... Subscription required ....................... Subscription required Subscription required Mar 2, 2021
....................... Subscription required ....................... Subscription required Subscription required Mar 2, 2021
Subscription required - Subscription is required.

Staff:

EmployeesYear
Subscription required 2020
Subscription required 2019
Subscription required 2018
Subscription required 2017
Subscription required 2016
Subscription required 2015

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2020
................................... Subscription required 2019
Fact Sheet 2018
Form 10-K 2018
Fact Sheet 2017
Form 10-K 2017
Annual Report 2016
Annual Report 2015
Annual Report 2014
Subscription required - Subscription is required.

Aerial view:

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