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Multiemployer Pension Plans (Tables) | 12 Months Ended
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Dec. 31, 2020
Compensation And Retirement Disclosure [Abstract] |
Multiemployer Pension Plan Description and Contributions | The following table presents information about multiemployer pension plans in which we participate:
|  |  |  | Pension |  | FIP/RP Status |  | Contributions of |  |  |  |  |  |  |
|  | Employer |  | Protection Act |  | Pending/ |  | the Company |  |  | Surcharge |  | Expiration Date
|  | Identification |  | Zone Status1 |  | Implemented |  | Year Ended December 31, |  |  | Imposed |  | of Collective-
Pension Fund |  | Number |  | 2020 |  | 2019 |  | in 20202 |  | 2020 |  |  | 2019 |  |  | 2018 |  |  | in 2020 |  | Bargaining Agreements
|  |  |  |  |  |  |  |  |  | (in millions of dollars) |  |  |  |  |  |  |
Steelworkers Pension Trust (USW)3 |  | 23-6648508 |  | Green |  | Green |  | No |  | $ | 3.8 |  |  | $ | 3.8 |  |  | $ | 3.6 |  |  | No |  | Mar 2021 - Sep 2025
Other Funds4 |  |  |  |  |  |  |  |  |  |  | 1.1 |  |  |  | 1.2 |  |  |  | 1.1 |  |  |  |  |  |  |
|  |  |  |  |  |  |  |  |  | $ | 4.9 |  |  | $ | 5.0 |  |  | $ | 4.7 |  |  |  |  |  |  |
1. | The most recent Pension Protection Act zone status available in 2020 and 2019 for the Steelworkers Pension Trust is for the plan’s year end at December 31, 2019 and December 31, 2018, respectively. The zone status is based on information that we received from the plan and is certified by the plan’s actuary. Among other factors, plans in the green zone are at least 80% funded.
2. | The “FIP/RP Status Pending/Implemented” column indicates if a Financial Improvement Plan (FIP) or a Rehabilitation Plan (RP) is either pending or has been implemented for the plan under the Pension Protection Act.
3. | We are party to three collective bargaining agreements with the United Steel, Paper and Forestry, Rubber, Manufacturing, Energy, Allied Industrial and Service Workers International Union, AFL-CIO, CLC (“USW”) that require contributions to the Steelworkers Pension Trust. As of December 31, 2020, USW collective bargaining agreements covering employees at our Newark, Ohio (“Newark”) and Spokane, Washington (“Trentwood”) facilities covered 85% of our USW-represented employees and expire in September 2025. Our monthly contributions per hour worked by each bargaining unit employee at our Newark and Trentwood facilities were (in whole dollars) $1.75 in 2020. The union contracts covering employees at our Richmond, Virginia facility and Florence, Alabama facility cover 12% and 3% of our USW-represented employees, respectively, and expire in November 2021 and March 2021, respectively.
4. | Other Funds consists of plans that are not individually significant.

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