Cypress Development Reports Further Positive Metallurgical Results from Clayton Valley Lithium Project in Nevada VANCOUVER, British Columbia, Nov. 24, 2020 — Cypress Development Corp. ( Frankfurt: C1Z1) (“Cypress” or “the Company”) reports the completion of additional metallurgical testing following the positive Prefeasibility Study (PFS) published on the Company’s 100%-owned Clayton Valley Lithium Project in Nevada, USA. The testing was conducted at Continental Metallurgical Services in Montana and NORAM Engineering in British Columbia, in preparation for the Company’s pilot plant program as outlined in the PFS. Highlights Testing resulted in 80.2% extraction of lithium when a sodium chloride solution was used instead of distilled water in leaching claystone under Cypress’ sulfuric acid leach process.