{"schema_version":"secwatch.filing_event.v1","accession":"0001641172-25-005917","form_type":"8-K","ticker":"USGO","cik":"0001947244","company_name":"U.S. GoldMining Inc.","filed_at":"2025-04-24T23:59:59+00:00","discovered_at":"2026-05-14T18:02:50.541810+00:00","generated_at":"2026-05-23T07:23:07.152553+00:00","sec_items":["7.01","9.01"],"event_type":"other_material","sentiment":"positive","materiality_score":0.6,"calibrated_materiality_score":0.6,"confidence":"high","headline":"U.S. GoldMining starts metallurgical testwork for Whistler Gold-Copper PEA","bullets":["Engaged BaseMet Laboratories to develop process flowsheet optimized for metal recovery at Whistler.","Testwork aims to support a PEA (initial assessment) under S-K 1300 and NI 43-101.","Previous testing showed 70% gold and 83% copper recoveries; new work targets optimization.","Variability composites and master composite from 2023-2024 drill core will be analyzed.","Includes gravity gold, flotation, and cyanide leaching testwork on concentrate tailings."],"urls":{"canonical":"https://secwatch.observer/filing/0001641172-25-005917","json":"https://secwatch.observer/filing/0001641172-25-005917.json","markdown":"https://secwatch.observer/filing/0001641172-25-005917.md","text":"https://secwatch.observer/filing/0001641172-25-005917.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1947244/000164117225005917/0001641172-25-005917-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1947244/000164117225005917/form8-k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-23T07:23:07.152553+00:00"},"review":{"review_status":"machine_generated","human_reviewed":false,"corrected":false,"correction_note":null,"correction_timestamp":null,"superseded_by":null,"related_filings":[]},"source_grounded_claims":[],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}