Joint Filing Agreement
Exhibit A
We, the undersigned, hereby express our agreement that the attached Schedule 13D is, and any further amendments
thereto signed by each of the undersigned shall be, filed on behalf of each of us pursuant to and in accordance with the provisions of Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended. This agreement may be terminated with
respect to the obligations to jointly file future amendments to such statement on Schedule 13D as to any of the undersigned upon such person giving written notice thereof to each of the other persons signatory hereto, at the principal office
thereof.
Dated: December 30, 2021
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By:
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/s/ MUSTAFA GÖRKEM ELVERICI
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MUSTAFA GÖRKEM ELVERICI
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DIRECTOR
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SISECAM CHEMICALS WYOMING LLC
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By:
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/s/ MUSTAFA GÖRKEM ELVERICI
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MUSTAFA GÖRKEM ELVERICI
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DIRECTOR
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SISECAM CHEMICALS RESOURCES LLC
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By:
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/s/ MUSTAFA GÖRKEM ELVERICI
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MUSTAFA GÖRKEM ELVERICI
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DIRECTOR
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SODA SANAYII A.S.
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By:
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/s/ MUSTAFA GÖRKEM ELVERICI
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MUSTAFA GÖRKEM ELVERICI
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DIRECTOR
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TÜRKIYE ŞIŞE VE CAM FABRIKALARI A.Ş.
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By:
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/s/ MUSTAFA GÖRKEM ELVERICI
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MUSTAFA GÖRKEM ELVERICI
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DIRECTOR
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