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Accounts Payable and Accrued Liabilities (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Trade payables | $ 6.1 | $ 5.9
Postretirement health and life benefit obligations - current | 10.1 | 7.3
Compensation and benefits payable | 21.1 | 15.7
Provision for Loss on Contracts | 0.0 | 20.0
Short-term inventory loan | 14.3 | 9.9
Operating Lease, Liability, Current | 1.4 | 3.3
Other accrued liabilities | 3.2 | 3.4
Accounts payable and accrued liabilities | $ 56.2 | $ 65.5

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