Copper Giant Initiates Next Phase Metallurgical Testing At Mocoa As Part Of Integrated Strategy for the 2026 PEA Advancement

Executive Summary

• Copper Giant engaged independent metallurgist Frank Wright and selected SGS Canada to conduct the next phase of metallurgical testing on the Mocoa Cu‑Mo porphyry project.
• The new program expands testing to ~675 kg of composite material, targeting variability assessment, grindability, flotation circuit refinement and integration with geological domains to support a PEA‑level technical confidence.
• Prior bench‑scale results showed high rougher recoveries (Cu up to 92%, Mo up to 97%); the current work aims to define final concentrate grades and recovery assumptions critical for future economic evaluation.

Key Details

• Consultant Engagement: Frank Wright, P.Eng., appointed as independent metallurgical consultant to design, supervise and interpret the program.
• Laboratory Selection: SGS Canada chosen for its certified, independent testing capabilities; work to be performed at SGS facilities in Burnaby, BC under senior metallurgist Jesse Ding (PhD).
• Testing Scope: Approximately 675 kg of material selected from assay rejects across the current Mineral Resource Estimate footprint; composites built from ≥10 m intervals to capture lithology, alteration and grade variability.
• Program Components:
• Mineralogical characterization
• Grindability assessment
• Flotation circuit refinement (including cleaning‑stage testing)
• Studies linking concentrate grade/recovery to geological domains for PEA modeling.
• Historical Bench‑Scale Results (Oct 2025): Rougher copper recoveries up to 92%; rougher molybdenum recoveries up to 97% on a ~130 kg composite sample.
• Open‑Cycle Test Results (Dawson Labs): Copper concentrate 24.2 % Cu at 85.9 % recovery; Molybdenum concentrate 55.14 % Mo at 82.7 % recovery – considered representative benchmarks for marketable concentrate production.
• Resource Context: Mocoa Mineral Resource Estimate includes inferred resources of 12.7 B lb Cu‑Eq at 0.51 % Cu‑Eq (7.7 B lb Cu, 1.0 B lb Mo) within 1,120 Mt.
• Strategic Alignment: Metallurgical program runs in parallel with drilling, geotechnical, hydrogeological and other exploration work outlined in the 2026 Exploration Plan to de‑risk the project ahead of a Preliminary Economic Assessment.

Notable Quotes

“Our initial metallurgical results confirmed that Mocoa responds well to conventional processing and exceeded recovery assumptions used in the resource model… By strengthening metallurgical oversight and working with Frank and SGS, we are advancing toward PEA‑level technical confidence in a disciplined and methodical way.” – Edwin Naranjo Sierra, Vice‑President of Exploration.