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Note 10 - Self-Insurance | 3 Months Ended
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Mar. 31, 2023
Notes to Financial Statements |
Self Insurance [Text Block] |
(10) | SELF-INSURANCE
We self-insure our underground mining equipment. Such equipment is allocated among seven mining units dispersed over ten miles. The historical cost of such equipment was approximately $285 million and $280 million as of March 31, 2023, and December 31, 2022, respectively. Restricted cash of $3.9 million and $3.4 million as of March 31, 2023, and December 31, 2022, respectively, represents cash held and controlled by a third party and is restricted for future workers’ compensation claim payments and cash collateral to provide power in the MISO grid.

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