Item 5.02 Departure of Directors or Certain Officers; Election of Directors;


           Appointment of Certain Officers; Compensatory



. Sharad Mathur resigned as the Chief Technology Officer of the Company effective

April 25, 2022. Mr. Mathur resigned for personal reasons. Mr. Mathur will

continue to provide the Company with technical advisory services with respect

to its iron oxide and halloysite clay businesses with particular focus on its

recent halloysite-derived silicon project.

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