Cypress Development Corp. reported it has achieved a significant milestone with the production of 99.94% lithium carbonate (Li2CO3) made from lithium-bearing claystone from the Company's 100%-owned Clayton Valley Lithium Project in Nevada, USA (Project). The Li2CO3 was derived from the intermediate concentrated lithium solution produced at Cypress' Lithium Extraction Facility in Amargosa Valley, Nevada (Pilot Plant).

Following direct lithium extraction (DLE) at the Plant, Saltworks Technologies Inc. (Saltworks) completed the processing system design and pilot work to make the Li2CO3. Cypress executed pilot operations through to production of `three nines' Li2CO3 that exceeds the standard battery grade specifications below. All processing was completed with material from the Company's Project in an end-to-end automated pilot plant that represents full scale production.

Independent analyses of product samples were completed by SGS Canada Inc., with the results showing greater than 99.9 wt% purity in a scalable representative process. The final product surpasses industry requirements for standard battery grade Li2CO3 and has achieved industry requirements for enhanced battery grade Li2CO3 for xEV use. It is common practice for lithium battery manufactures to have specific requirements for Li2CO3 used in their products dependant on application.