GreenMet Announces Growth at its Washington, DC Headquarters

WASHINGTON, D.C. April 6, 2023 – GreenMet announces the broadening of its operations in the Washington, DC. area.  GreenMet is making groundbreaking contributions to the establishment of a modern, secure, and vertically integrated North American supply chain of critical minerals including rare earths.

“I am pleased that our company is maturing and thriving to the point of requiring an expanded and strategically located office space and new talented staff members,” said GreenMet CEO Drew Horn.  “As we continue to serve as the connector between Wall Street and the U.S. Government, we have a locational and advisory presence at the nexus of these policy makers.  Our new space on the K Street corridor will provide our partners in the critical mineral industry with a convenient seat at the table of global collaboration to ensure our nation’s national security and energy freedom.”

As part of the GreenMet operational expansion, it has engaged a Chief Geologist and Director of Operations, who between them have a combined 50 years in the energy and natural resource fields. GreenMet leadership is already at the forefront of the U.S.’s reduction in import reliance for valued mineral resources which have diverse defense, energy, industrial and military technology applications. 

GreenMet’s geological hire, Dr. Ned Mamula, is the preeminent scholar on critical minerals, energy, and resource policy issues. He has spearheaded numerous mineral assessments during his tenure with the U.S. Geological Survey, the U.S. Department of Energy, (DOE) and throughout private industry. Dr. Mamula has also written and spoken extensively on resource policy, mining, critical minerals demand, international supply chain vulnerabilities, and the geopolitics of mineral resources.

“Ned literally wrote the book on critical materials called Groundbreaking! America’s New Quest For Mineral Independence,” said Horn.  “He oversees our methodical due diligence process and provides site assessments, with an eye to critical evaluation and validation of mineral resources. This geological input supports both strategic investment opportunities and technical positioning for our long-term operational goals.”

In addition to Dr. Mamula, GreenMet hired seasoned Washington, DC lawyer and resource policy advisor, Janet Roell Naughton. She has served a wide variety of roles in the private sector but is most proud of her public service to her country in the protection and stewardship of its natural resources most notably within the immediate offices of the U.S. Trade Representative and Secretaries of the U.S. Department of Agriculture, the U.S. Department of the Interior, and the U.S. Department of Energy (DOE).

“Janet and I worked together at DOE on the successful mission there to gain U.S. energy independence,” Horn remarked.  “I know firsthand her operational expertise and invaluable counsel to both the Secretary and General Counsel at DOE and was thrilled that she agreed to join my team.”

The confluence of prime location, mineral expert and executive advisor provides the GreenMet team and its affiliates with proven resources and skills to work with leaders in both the Executive and Legislative branches.  GreenMet is sought after both domestically and internationally as authorities in the near- and long-term efforts to ensure the public mandate for our clean energy critical mineral supply chain as it grows stronger and more competitive each day.


GreenMet ( is focused on developing the infrastructure for sustainable, reliable, and secure critical mineral supply chains to meet North American energy and technology needs. Based in Washington, D.C., GreenMet’s mission is to elevate the importance of responsible critical mineral mining, mineral processing, and metallurgy. The company works to promote domestic mineral resource development as integral to U.S. trade and defense, energy, and fiscal policy.

According to Executive Order 13817, “Critical Minerals” are defined as a non-fuel mineral or mineral material essential to the economic and national security of the United States, the supply chain of which is vulnerable to disruption, and that serves an essential function in the manufacturing of a product, the absence of which would have significant consequences for our economy or our national security.