Construction of Calcining Facility

IONE, CA, May 9, 2023 – Purebase Corporation (OTCPK: PUBC), Purebase Corp has moved to the construction phase of a metakaolin processing facility. Phase one of the buildout will be the modification and upgrading of existing assets located on US Mine Corp property.

This existing infrastructure will fast-track Purebase’s ability to commercially produce a metakaolin suitable for supplementary cementitious materials. When commercial production begins, we will be able to complete the approval process for addition onto Cal Tran’s Approved Materials List. Being on this list will allow our metakaolin to be used on Cal Tran’s projects throughout the state of California.

Being in commercial production will allow us to expand our testing with universities and producers in the cement industry. We will produce metakaolin for full-scale testing for road projects, buildings, precast, and geopolymer applications.

Scott Dockter, CEO of Purebase, stated, “We expect to be in commercial production within 6 months and will immediately start these full-scale tests to prove out what we already have proven in the bench scale models. It will be a busy and productive time for Purebase and all of the years of research and development will start paying off.”

Investor Contacts

Julie Colgan – Purebase Corporation | julie.colgan@purebase.com.

Safe Harbor

This press release contains statements, which may constitute “forward-looking statements” within the meaning of the Securities Act of 1933 and the Securities Exchange Act of 1934, as amended by the Private Securities Litigation Reform Act of 1995. Those statements include statements regarding the intent, belief, or current expectations of Purebase Corporation and members of its management team as well as the assumptions on which such statements are based. Such forward-looking statements are not guarantees of future performance and involve risks and uncertainties, and actual results may differ materially from those contemplated by such forward-looking statements. Important factors currently known to management that may cause actual results to differ from those anticipated are discussed throughout the Company’s reports filed with the Securities and Exchange Commission which are available at www.sec.gov as well as the Company’s website at www.purebase.com. The Company undertakes no obligation to update or revise forward-looking statements to reflect changed assumptions, the occurrence of unanticipated events, or changes to future operating results.

Purebase Terminates non-binding Term Sheet IONE, CA, May 2, 2023 – Purebase Corporation (OTCPK: PUBC),

(“Purebase”) a diversified mineral resource company, headquartered in Ione, California, has elected to terminate the non-binding Term Sheet with Fortera Corporation regarding the proposed construction of an onsite commercial manufacturing plant. As a result, Purebase currently intends to move forward with constructing a manufacturing facility to produce products on its own.

Scott Dockter, Purebase CEO stated: “A significant amount of time was spent to ensure that we evaluated the best path forward for developing Purebase’s manufacturing capabilities. As a result, Purebase intends to move forward with the construction of its own manufacturing facility to produce carbon-reducing Supplementary Cementitious Materials “SCM” products in Ione, CA.”

About Purebase Corporation Purebase Corporation (OTCPK:PUBC) is a diversified resource company that acquires, develops, and markets minerals for use in agriculture, construction, and other specialty industries.

Safe Harbor This press release contains statements, which may constitute “forward-looking statements”. Those statements include statements regarding the intent, belief, or current plans or expectations of Purebase Corporation and members of its management team as well as the assumptions on which such statements are based. Such forward-looking statements are not guarantees of future performance and involve risks and uncertainties, and actual results may differ materially from those contemplated by such forward-looking statements. Risks and other important factors concerning Purebase’s business are described in the Company’s Annual Report on Form 10-K for the year ended November 30, 2022, and other periodic and current reports filed with the Securities and Exchange Commission. The Company is under no obligation to, and expressly disclaims any such obligation to update its forward-looking statements, whether as a result of new information, future events or otherwise. Investor Contacts Emily Tirapelle – Purebase Corp

Safe Harbor

This press release contains statements, which may constitute “forward-looking statements” within the meaning of the Securities Act of 1933 and the Securities Exchange Act of 1934, as amended by the Private Securities Litigation Reform Act of 1995. Those statements include statements regarding the intent, belief, or current expectations of Purebase Corporation and members of its management team as well as the assumptions on which such statements are based. Such forward-looking statements are not guarantees of future performance and involve risks and uncertainties, and actual results may differ materially from those contemplated by such forward-looking statements. Important factors currently known to management that may cause actual results to differ from those anticipated are discussed throughout the Company’s reports filed with Securities and Exchange Commission which are available at www.sec.gov as well as the Company’s website at www.purebase.com. The Company undertakes no obligation to update or revise forward-looking statements to reflect changed assumptions, the occurrence of unanticipated events or changes to future operating results.