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Several mining companies have announced leadership changes, including Arizona Sonoran Copper's promotion of Alison Dwoskin to vice president of investor relations and Barrick Mining's appointment of Helen Cai as CFO. Collective Mining, Defense Metals, and Evergold also made notable appointments and promotions, while Los Andes Copper's CEO Santiago Montt resigned for a ministerial role, with Antony Amberg stepping in as interim CEO. Other companies, including Valkea Resources and Lion One Metals, reported new executive appointments amidst board resignations.