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Management - Labor Relations (Tables)
 12 Months Ended
Dec. 31, 2023
Risks and Uncertainties [Abstract]  
Schedule of operations with employees represented by labor unions
The following table presents the Company’s active and inactive mining operations as of December 31, 2023 in which the employees are represented by organized labor unions:
MineApproximate Number of Active Employees RepresentedUnionCurrent Agreement Expiration Date or Date Amendable
U.S.
Kayenta20UMWANovember 2024
Shoal Creek270UMWADecember 2024
Australia
Wilpinjong440MEUJune 2024
Coppabella325MEUFebruary 2026
Moorvale (1)
210MEUJune 2023
Centurion (2)
10N/A2028
Metropolitan
Underground employees165MEUMay 2025
Handling and preparation plant employees (3)
15MEU2027
Wambo Underground
Underground employees120MEUNovember 2025
Handling and preparation plant employees20MEUAugust 2025
(1)    Employees of the Moorvale Mine operate on individual contracts under a direct engagement model. Such contracts are modeled after the Company’s former labor agreement with the MEU which ended in 2017. The Company is currently negotiating a new labor agreement with the MEU and employees.
(2)    The Company and employees have agreed to a new four-year term labor agreement in December, and it is lodged with the Fair Work Commission for approval.
(3)    The Company, employees and the MEU have agreed to a new three-year term labor agreement in December, and it is lodged with the Fair Work Commission for approval.