Note 12 - Self-insurance

6 Months Ended

Jun. 30, 2020

Notes to Financial Statements

Self Insurance [Text Block]

(12) 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 $273 million as of June 30, 2020, and December 31, 2019.

Restricted cash of $4.5 million as of June 30, 2020, and December 31, 2019 represents cash held and controlled by a third party and is restricted for future workers’ compensation claim payments.