Item 1.04 Mine Safety-Reporting of Shutdowns and Patterns of Violations.

On March 4, 2021, the Company received a section 107(a) order issued by the Mine Safety and Health Administration ("MSHA") under the Federal Mine Safety and Health Act of 1977 at its Weeping Water mine in Weeping Water, Nebraska. The order stated that a safe means of access was not provided nor maintained when a miner crossed through the engine compartment behind the cab of a front-end loader. The order was terminated shortly thereafter when the operator safely dismounted the machine. No one was injured in the cited incident.

Item 9.01 Financial Statements and Exhibits.




(d) Exhibits

104 Cover Page Interactive Data File (embedded within the Inline XBRL document)

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