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ATERRA Metals Commences Drilling at the Totora Copper-Gold Project, Chile

Toronto, Ontario--(Newsfile Corp. - March 25, 2026) - ATERRA Metals Inc. (CSE: ATC) (OTCQB: CSSCF) ("ATERRA") is pleased to announce that it has commenced a 3,0

articleAterra Metals Inc.March 25, 20265/company/aterra-metals-inc/news/aterra-metals-commences-drilling-at-the-totora-copper-gold-project-chile
ATERRA Metals Commences Drilling at the Totora Copper-Gold Project, Chile

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[{"type":"text","content":" Toronto, Ontario--(Newsfile Corp. - March 25, 2026) - ATERRA Metals Inc. (CSE: ATC) (OTCQB: CSSCF) (\"ATERRA\") is pleased to announce that it has commenced a 3,000 metre (\"m\") Phase I drill program on its 1,811-hectare Totora Copper-Gold Project, located in Chile's Region III, 60 kilometers south of Vallenar. The Totora Project hosts four near-surface, copper-gold porphyries with the Phase I drill program focusing on the Totora and Frontera Deposit porphyries. Commenting on the start of the drill program, Carl Hansen, CEO of ATERRA noted: \"Now that our geological team has completed re-logging the majority of the historical drill core from the Totora Project, we have gained a more fulsome understanding of the relationship between copper-gold grades and geology (lithologies, alteration and structure). Based upon our review, we have designed a drill program that prioritizes: 1) the confirmation of the historical drill results; and 2) increasing the size of the copper-gold porphyries. Our goal is to publish a resource estimate during the third quarter of 2026 integrating our Phase I drill assay results with the significant historical drilling completed on the Totora Project over the past 15 years.\" At the Totora porphyry, a 2,500 m reverse circulation drill program is underway adding to the 10,000 m of historical drilling which outlined a copper-gold porphyry system (see figure 1) along a strike length of over 800 m extending from surface to depths of up to 500 metres downhole. Historical drill results from the Totora porphyry include 142 m grading 0.58% copper equivalent (\"CuEq\") (0.47% copper and 0.17 grams per tonne gold) with a 72 m interval grading 0.83% CuEq (0.64% copper and 0.26 grams per tonne gold) from drill hole DDHTP-02. Upon completion of the Totora porphyry drilling, ATERRA will undertake approximately 500 m of diamond drilling into the Frontera Deposit to confirm historical drilling results in preparation for the updated resource estimate. The Frontera Deposit hosts historical resources of: Frontera Historical Resource Estimate (March 2014) Classification Tonnes Cu Au CuEq Contained Metal (millions) (%) (g/t) (%) Cu ('000 lbs) Au (ounces) Indicated 16 0.38 0.22 0.56 134,400 116,000 Inferred 34 0.36 0.22 0.54 275,500 239,000 NOTES - See \"Historical Results\" note and \"Copper Equivalent Estimation\" methodolo...

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