| Cleveland-Cliffs Burns Harbor LLC | BURNS HARBOR | IN | Iron and Steel Production | 7,644,163 | 27.85% | | 30.2% | 12.5% |
| Cleveland-Cliffs Steel LLC | EAST CHICAGO | IN | Iron and Steel Production | 5,642,028 | 20.56% | | 81.5% | 22.2% |
| Cleveland-Cliffs Cleveland Works LLC | CLEVELAND | OH | Iron and Steel Production | 4,269,452 | 15.56% | | 49.6% | 20.1% |
| Cleveland-Cliffs Steel Corporation - Middletown Works | MIDDLETOWN | OH | Iron and Steel Production | 3,512,088 | 12.80% | | 17.8% | 8.3% |
| TILDEN MINING COMPANY L C | ISHPEMING | MI | Iron and Steel Production | 1,065,738 | 3.88% | | 7.0% | 10.0% |
| CLEVELAND-CLIFFS STEEL CORPORATION DEARBORN WORKS | DEARBORN | MI | Iron and Steel Production | 1,006,823 | 3.67% | | 57.8% | 24.7% |
| IronUnits LLC | Toledo | OH | Iron and Steel Production | 802,938 | 2.93% | | 34.9% | 20.4% |
| Cleveland-Cliffs Steel LLC | East Chicago | IN | Iron and Steel Production | 703,787 | 2.56% | | 80.7% | 21.2% |
| UNITED TACONITE LLC - FAIRLANE PLANT | FORBES | MN | Iron and Steel Production | 398,435 | 1.45% | | 5.8% | 13.4% |
| Hibbing Taconite Company | Hibbing | MN | Iron and Steel Production | 286,265 | 1.04% | | 6.8% | 14.4% |
| Cleveland-Cliffs Steel Corporation /BUTLER WORKS | BUTLER | PA | Iron and Steel Production | 251,290 | 0.92% | | 5.9% | 8.1% |
| Cleveland-Cliffs Minorca Mine | Virginia | MN | Iron and Steel Production | 238,238 | 0.87% | | 6.5% | 16.7% |
| Cleveland-Cliffs Warren | WARREN | OH | Iron and Steel Production | 162,965 | 0.59% | | 18.7% | 18.3% |
| Cleveland-Cliffs Monessen Coke LLC | MONESSEN | PA | Iron and Steel Production | 150,425 | 0.55% | | 11.8% | 13.3% |
| CLEVELAND-CLIFFS PLATE LLC-COATESVILLE | COATESVILLE | PA | Iron and Steel Production | 150,076 | 0.55% | | 23.0% | 6.3% |
| CLEVELAND-CLIFFS RIVERDALE LLC | RIVERDALE | IL | Iron and Steel Production | 147,556 | 0.54% | | 77.4% | 18.8% |
| NORTHSHORE MINING CO - SILVER BAY | SILVER BAY | MN | Iron and Steel Production | 142,324 | 0.52% | | 6.5% | 9.5% |
| Cleveland-Cliffs Steel LLC | EAST CHICAGO | IN | Lime Manufacturing | 140,992 | 0.51% | | 81.5% | 22.2% |
| Cleveland-Cliffs Steel Corporation - Mansfield Works | MANSFIELD | OH | Iron and Steel Production | 126,556 | 0.46% | | 17.7% | 13.7% |
| Cleveland-Cliffs Steelton LLC | STEELTON | PA | Iron and Steel Production | 124,747 | 0.45% | | 32.7% | 9.8% |
| Cleveland-Cliffs Weirton LLC | WEIRTON | WV | Other Metals | 113,330 | 0.41% | | 9.9% | 14.9% |
| Cleveland-Cliffs Steel Corporation | ROCKPORT | IN | Other Metals | 112,151 | 0.41% | | 7.0% | 12.4% |
| Cleveland-Cliffs Tek Inc. and Cleveland-Cliffs Kote Inc. | NEW CARLISLE | IN | Other Metals | 98,928 | 0.36% | | 38.3% | 16.3% |
| Cleveland-Cliffs Princeton Coal | Princeton | WV | Underground Coal Mines | 44,729 | 0.16% | | 10.8% | 18.4% |
| Cleveland-Cliffs Steel Corporation | COSHOCTON | OH | Other Metals | 37,239 | 0.14% | | 6.0% | 20.8% |
| Cleveland-Cliffs Columbus LLC | Columbus | OH | Manufacturing | 24,409 | 0.09% | | 43.9% | 17.5% |
| Cleveland-Cliffs Steel Corporation - Zanesville Works | ZANESVILLE | OH | Other Metals | 18,757 | 0.07% | | 10.4% | 16.3% |
| Cleveland-Cliffs Steel Corporation /BUTLER WORKS | BUTLER | PA | Industrial Landfills | 18,695 | 0.07% | | 5.9% | 8.1% |
| CLEVELAND-CLIFFS PLATE LLC/CONSHOHOCKEN PLT | CONSHOHOCKEN | PA | Other Metals | 6,624 | 0.02% | | 46.2% | 11.0% |
| MOUNTAIN STATE CARBON | FOLLANSBEE | WV | Iron and Steel Production | 2,326 | 0.01% | | 10.1% | 14.6% |