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Interra Copper Further Details Its Exploration Program At The Tres Marias Copper Project In Chile

May 4, 2023, VANCOUVER, British Columbia – Interra Copper Corp. (CSE: IMCX, OTCQB: IMIMF, FRA: 3MX) (“Interra” or the “Company”) is pleased to provide further detail on the first phase of its planned exploration program at the Company’s Tres Marias Copper Project (the “Project” or “Tres Marias”) in the Antofagasta region of Chile. On April 10th, 2023, the Company first announced its 2023 exploration program consisting of a planned 10,500 m of Reverse-Circulation (“RC”) drilling to test several high priority geological and geophysical anomalies located on the 16,250 ha Project.

Planning of the Phase 1 drill holes in the Western Central and Eastern target areas is based on the review of all geophysical surveys and interpretations, as well as the interpreted structures (i.e., faults), which were interpreted mainly from the MVI MAG sections (Figure 1).

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Target Areas

Three target areas (Eastern, Central, and Western targets) were identified using a series of geophysical surveys, which included the reprocessing of 110 km² of ZTEM airborne survey completed by Freeport-McMoRan Inc. (“Freeport”) in 2013. The results of this geophysical reprocessing and 3D-inversion were processed using Machine Learning algorithms, with the new results supporting magnetic and resistivity anomalies in the three target areas.

As follow-up work, detailed magnetic surveys (UAV MAG) on E-W flight lines were completed over the three target areas: East Target (36 lines, each 6 km long, 100 m spacing, totalling 216 line-km); Central Target (21 lines, each 6 km long, 150 m spacing, totalling 126 line-km; and West Target (21 lines, each 8 km long, totalling 168 line-km) (Figure 1).

Results of the UAV MAG inversion supported the ZTEM magnetic anomalies located in the three target areas and based on these results, six 3D-Induced Polarization (3D-IP GSDAS) profiles were completed: East Target (2 lines, each 4.95 km long, totalling 9.9 line-km; Central Target (1 line, 6 km long, totalling 6 km); and West Target (3 lines, totalling 13.05 line-km) (Figure 1). The results of the 3D-IP geophysical survey outlined encouraging chargeability and resistivity results in all three target areas.


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