secwatch.observer — SEC 8-K summary ====================================== Issuer: GOLD RESOURCE CORP (GORO) CIK: 0001160791 Form: 8-K Filed at: 2023-10-27T23:59:59+00:00 Accession: 0001558370-23-016891 Event type: other_material Sentiment: positive Materiality: 0.80 Item codes: 7.01, 8.01, 9.01 LLM model: deepseek-v4-flash:cloud@v2 Gold Resource reports Back Forty IA: $214M after-tax NPV, 25.7% IRR ------------------------------------------------------------------- - 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. Source: EDGAR index: https://www.sec.gov/Archives/edgar/data/1160791/000155837023016891/0001558370-23-016891-index.htm Primary doc: https://www.sec.gov/Archives/edgar/data/1160791/000155837023016891/goro-20231026x8k.htm HTML page: https://secwatch.observer/filing/0001558370-23-016891 License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer