Gold Resource Corporation Announces Contract With SLR for Completion of the Back Forty Feasibility Study

Gold Resource Corporation (NYSE American: GORO) (the “Company”) today announced that it has engaged Responsible Mining Solutions Corp. (“RMS”) a part of SLR Consulting Ltd. (“SLR”), to complete a comprehensive feasibility study (the “Feasibility Study”) for the Company’s wholly owned Back Forty project, located in the Upper Peninsula of Michigan.

The Feasibility Study will evaluate technical, economic, and operational parameters associated with the Back Forty project, including mine design considerations, processing options, infrastructure requirements, environmental factors, and project economics. Work under the agreement will commence immediately.

This engagement represents a key milestone in Gold Resource Corporation’s broader growth strategy, as the Company advances its efforts to expand its North American asset base and strengthen its long‑term production profile. The Feasibility Study is expected to provide a critical foundation for informed decision making regarding the scope, sequencing, permitting and execution of the project.

SLR was selected based on its extensive experience in mining engineering, mineral economics, and project development, as well as its familiarity with complex feasibility level evaluations. The Company expects the engagement to support not only the initial Feasibility Study but also potential follow‑on technical work and permitting support as the project advances.

In October 2023, the Company published a Technical Report Summary (the “TRS”) in compliance with Subpart1300 of Regulation S-K. Using gold prices of $1,800 per ounce, silver prices of $23.30 per ounce and copper prices of $3.90 per pound, the TRS resulted in an IRR of 25.7% and an NPV@6% of $214.5 million. The Company expects that the current commodity environment will result in a significantly higher valuation for the project and support a production decision in the future.

About GRC:

Gold Resource Corporation is a gold and silver producer, developer, and explorer with its operations centered on the Don David Gold Mine in Oaxaca, Mexico. Under the direction of an experienced board and senior leadership team, the Company’s focus is to unlock the significant upside potential of its existing infrastructure and large land position surrounding the mine in Oaxaca, Mexico and to develop the Back Forty Project in Michigan, USA. For more information, please visit the Company’s website, located at www.goldresourcecorp.com.