Star Metro - PPX Mining Announces Sucessful Completion of Geotubes Testing Program for Its Plant

Testing was conducted during May and June 2025 using tailings from the Callanquitas Mine, simulating both ore types and the proposed grinding specifications of the plant. The initial phase involved assessing water filtration capabilities using geotextile fabric samples from a range of international suppliers. This was followed by small-scale prototype geotube, for testing purposes, of approximately 50 x 50 x 30 cm in dimension, provided by the manufacturers.

The results demonstrated that a geotextile supplied by a Chinese manufacturer delivered exceptional performance, achieving high water clarity (sediment levels below the permissible limit of 50 milligrams per liter), efficient dewatering rates exceeding 70%, and low residual moisture in the retained solids. The selected geotextile also proved to be highly cost-effective and is slated for use upon commencement of plant operations.

These evaluations were conducted in collaboration with the Universidad Nacional de Ingeniería (UNI) in Peru, whose laboratory facilities hosted the testing. This initiative aligns with PPX's commitment to sustainable, environmentally friendly practices and technologies that also enhance geomechanical stability.

PPX has opted to utilize Geotubes for tailings storage due to their multiple advantages over conventional tailings dams. Geotube systems significantly reduce the environmental and structural risks associated with dam failures, a concern that has gained increased attention globally. Moreover, Geotubes offer a lower initial capital cost and can be implemented in alignment with the phased growth of the Company's mining and processing operations.

The adoption of Geotubes is also expected to optimize tailings storage capacity by enabling a more compact and efficient arrangement of solids, thereby maximizing the use of the available footprint designated for tailings confinement.

John Thomas, CEO of PPX commented - "our decision to implement Geotube technology is a clear reflection of PPX's commitment to responsible mining and environmental sustainability. We are dedicated to adopting best-in-class practices that not only enhance operational efficiency but also minimize our environmental footprint and promote the long-term well-being of the communities where we operate."

All scientific and technical information in this press release has been reviewed and approved by John Thomas, P. Eng., who is the CEO of the Company and a qualified person under the definitions established by National Instrument 43-101.

On behalf of the Board of Directors
John Thomas
Chief Executive Officer
82 Richmond Street East
Toronto, Ontario M5C 1P1
Canada
416-361-0737

Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.

Cautionary Statement:

This press release contains forward-looking information and forward-looking statements (collectively, "forward-looking statements") as such terms are defined by applicable securities laws, including, but not limited to statements regarding test results, future plans or management estimates. Forward-looking statements are statements that relate to future events. In this context, forward-looking statements often address expected future business and financial performance and often contain words such as "anticipate," "believe," "plan," "estimate," "expect," and "intend,", statements that an action or event "may," "might," "could," "should," or "will" be taken or occur, or other similar expressions. Forward-looking statements are subject to a number of known and unknown risks and uncertainties, many of which involve factors or circumstances that are beyond the Company's control, and the Company's actual results could differ materially from those stated or implied in forward-looking statements due to many various factors. Such uncertainties and risks include, among others, delays in obtaining or inability to obtain required regulatory approvals in connection with this transaction. Although the Company believes that the expectations reflected in the forward-looking statements are reasonable, the Company cannot guarantee that the events and circumstances reflected in the forward-looking statements will be achieved or occur. The timing of events and circumstances and actual results could differ materially from those projected in the forward-looking statements. Accordingly, one should not place undue reliance on forward- looking statements. All forward-looking statements contained in this press release are made as of today's date, and the Company undertakes no obligation to update or publicly revise any forward-looking statements, whether as a result of new information, future events or otherwise, unless required by law.

SOURCE: PPX Mining Corp.

View the original press release on ACCESS Newswire

O.Gauthier--SMC