US Antimony Reveals $4.6B Tungsten Resource in Ontario, Aims to Revive North American Production

Published: Mar 11, 2026 12:01

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[SMM Tungsten Express] US Antimony released a resource estimate for its Fostung tungsten project in Ontario. SRK Consulting reported an inferred resource of 14.62 million tonnes grading 0.17% WO₃, containing 53.6 million lbs of tungsten metal, valued at approximately $4.6 billion at current prices. The company plans to fast-track the project as the next North American tungsten producer and has applied for U.S. Defense Production Act funding. Neither the U.S. nor Canada has produced tungsten concentrates since 2016.

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