• AI-powered X-ray Transmission ("XRT") sorting testwork on samples of mineralized material successfully showed that approximately 20% of the tested lower-grade material could be screened out before reaching the processing plant, potentially freeing up capacity to increase production and/or extend mine life.
• Additional testwork, technical and economic studies will need to be done after commercial production to consider whether the technology could be incorporated into the Autazes Project.
   

MANAUS, Brazil, Oct. 13, 2026 (GLOBE NEWSWIRE) -- Brazil Potash Corp. ("Brazil Potash" or the "Company") (NYSE:GRO), a critical mineral exploration and development company advancing the Autazes Potash Project (the "Autazes Project" or "Project") in Amazonas State, Brazil, today announced positive initial results from its testing of Artificial Intelligence-powered X-ray Transmission ("XRT") sorting technology, initiated when first announced in December 2025.

The testwork, conducted with engineering firm ERCOSPLAN, indicates that AI-powered XRT sorting technology is able to distinguish higher-grade potash mineralization from lower-grade material within the tested sample. The test was performed on ore greater than approximately 8 mm in size, and ERCOSPLAN anticipates that approximately 40% to 55% of the material it expects to mine will be greater than this size. In the initial test program, a sample containing approximately 13% KCl was upgraded to approximately 27% KCl, while the rejected fraction contained approximately 1% to 2% KCl. Based on the results obtained from the tested sample, approximately 20% of the lower-grade material in the sample was rejected prior to processing. Due to the small sample tested, the results are indicative and cannot yet be regarded as representative of full-scale mine production.

The Company intends to perform additional testwork and further engineering and economic analysis to consider and evaluate whether AI-powered XRT sorting technology could be implemented at the Autazes project to:

1. preconcentrate material and then hot leach process it to potentially increase production without the need to build a third mine shaft, and/or
    
2. access lower-grade areas of the Autazes potash deposit that are not economic to mine today, extending the mine’s operating life.

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