Purebase Corporation receives favorable results on its metakaolin from Penn State University and Purdue University
IONE, CA, June 14, 2023 – Purebase Corporation (OTCPK: PUBC), (“Purebase”) a diversified mineral resource company, headquartered in Ione, California.

In recent studies conducted and released by Dr. Farshad Rajabipour at Pennsylvania State University and Dr. Jan Olek at Purdue University, Purebase’s metakaolin tested very well against other pozzolans and calcined clays from across the country. The study focused on the performance of these materials in Portland cement systems. Portland cement is the most common type of cement in general use around the world as a basic ingredient of concrete, mortar, stucco, and non-specialty grout.

In compressive strengths, the Purebase metakaolin, along with other calcined clays, showed the highest early-age values. In total heat values, the Purebase metakaolin was near the very top, and tested above all the other natural pozzolans. In the replacement of consumed carbon-hydrogen at 28 days, the Purebase metakaolin came out on top. In average compressive strength of mortar cubes at 7- and 28-day breaks, the Purebase metakaolin was also near the very top of all competing pozzolans.

These results suggest that cement that uses metakaolin in their cement design is stronger and more durable. This helps make greener concrete which reduces carbon emissions. This confirms that Purebase is on track to help California achieve its goals as mandated by California SB596.

California SB596, a Senate Bill passed in 2021, requires the California Air Resources Board (CARB) by July 1, 2023, to develop a comprehensive plan to reduce greenhouse gas emission from the cement sector.

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 Corporation | emily.tirapelle@purebase.com.

Purebase is on schedule for installation of calciner.

IONE, CA, June 5, 2023 – Purebase Corporation (OTCPK: PUBC), (“Purebase”) a diversified mineral resource company, headquartered in Ione, California.

Purebase Corp is on schedule for the installation of its Phase 1 calciner operations and expects to be in production in the next 60 days. The calciner is the key component for Purebase to produce a metakaolin from their supply of kaolin located in Ione, California. Metakaolin is considered by many industry experts to be a key component in the mix design of a “green cement.”

Metakaolin is commonly used in the production of ceramics but is also used as an SCM (Supplementary Cementitious Material). SCM’s are added to concrete mixtures for various reasons including improving durability, decreasing permeability, and improving the overall hardened properties of concrete. But one of the most important properties of an SCM is its ability to help reduce carbon emissions from the manufacturing of cement which is a high priority in California as evidenced by California’s recent legislation known as Senate Bill (SB) 596.

California SB596, a Senate Bill passed in 2021, requires the California Air Resources Board (CARB) by July 1, 2023, to develop a comprehensive plan to reduce greenhouse gas emissions from the cement sector. Scott Dockter, CEO of Purebase Corporation, stated, “The good news is that our calcining operations will be based in California using a resource found right here in Ione, CA. Not only will our product play a role in the reduction of global greenhouse emissions, it also won’t have to be transported from out of state, which will reduce transportation emissions as well. It will be a benefit for California and a win for Purebase.”

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 Corporation | emily.tirapelle@purebase.com.

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.

Purebase and Fortera Sign Term Sheet to Build Commercial Plant

IONE, CA, December 01, 2022 — Purebase Corporation (OTCPK: PUBC), (“Purebase”) a diversified resource company, headquartered in Ione, California, is in discussions with Fortera Corporation (“Fortera”), a Silicon Valley-based materials technology company, regarding the proposed terms of a commercial plant agreement.

Purebase and Fortera recently entered into a non-binding term sheet and are working towards a definitive agreement that sets forth the terms of a collaboration to design, construct and operate a commercial facility at Purebase’s headquarters in Ione, California.

Fortera is the owner of know-how and intellectual property related to its ReCarb ™ process for the production of calcium carbonate cements.

For the past six years, Purebase has been working with universities, state Departments of Transportation, and a private development testing facility to develop alternative supplementary cementitious materials to be used to replace a portion of cement in the production of concrete. Historically, coal fly ash has been the most common replacement for cement, but it is primarily generated by coal-burning power plants which are also high in carbon emissions.

“We believe that a strategic partnership with Fortera would put Purebase on a fast-track to bring a lower carbon product to market,” said Scott Dockter, Chairman, and CEO of Purebase. “We believe Fortera has developed a unique solution to reduce carbon emissions in cement, and it will have the advantage of using Purebase’s mineral resources and location in Ione, California which is ideally located in northern California near major ports which can effectively serve the western-U.S. markets and abroad.”

“We believe our ability to economically produce a low CO₂ cementitious material that has excellent durability and water demand will provide a long-term dependable product to help the California market reach its sustainability goals,” said Dr. Ryan Gilliam, CEO, and Co-founder of Fortera.

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

About Fortera Corporation
Fortera is a California-based materials technology company founded in May 2019 that has created a process that economically converts CO₂ into a cement which reduces CO₂ emissions and can be used anywhere ordinary Portland Cement is used.

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, 2021, 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 Corporation | emily.tirapelle@purebase.com.
Jon Wilcox – Fortera Corporation | jwilcox@forterausa.com