{"schema_version":"secwatch.filing_event.v1","accession":"0001558370-23-016891","form_type":"8-K","ticker":"GORO","cik":"0001160791","company_name":"GOLD RESOURCE CORP","filed_at":"2023-10-27T23:59:59+00:00","discovered_at":"2026-05-14T18:03:28.360465+00:00","generated_at":"2026-06-09T06:45:54.752046+00:00","sec_items":["7.01","8.01","9.01"],"event_type":"other_material","sentiment":"positive","materiality_score":0.8,"calibrated_materiality_score":0.8,"confidence":"high","headline":"Gold Resource reports Back Forty IA: $214M after-tax NPV, 25.7% IRR","bullets":["After-tax NPV6 of $214.4M and IRR of 25.7% for Back Forty Project at base-case metal prices.","LOM production: 504 koz gold, 6,150 koz silver, 61.6 Mlbs copper, 778 Mlbs zinc over 9 years.","Updated MRE: 14.5M tonnes indicated at 2.21 g/t Au, 26.64 g/t Ag, 0.38% Cu, 3.35% Zn.","Initial capital cost est. $325.1M; average operating cost $84.81/t milled.","Project designed with dry-stack tailings, no tailings dam, reducing environmental footprint."],"urls":{"canonical":"https://secwatch.observer/filing/0001558370-23-016891","json":"https://secwatch.observer/filing/0001558370-23-016891.json","markdown":"https://secwatch.observer/filing/0001558370-23-016891.md","text":"https://secwatch.observer/filing/0001558370-23-016891.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1160791/000155837023016891/0001558370-23-016891-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1160791/000155837023016891/goro-20231026x8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-09T06:45:54.752046+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"}