In a pivotal development for the emerging deep-seabed mining sector, National Oceanic and Atmospheric Administration (NOAA) has determined that the consolidated application submitted by The Metals Company (TMC USA) is in full compliance with the requirements of the Deep Seabed Hard Mineral Resources Act (DSHMRA).

The decision marks a significant regulatory milestone for the company’s ambitions to commercially recover polymetallic nodules from the Clarion Clipperton Zone (CCZ), an area widely regarded as one of the world’s most prospective untapped sources of critical minerals such as nickel, cobalt, copper and manganese.

The compliance determination follows NOAA’s earlier finding of “substantial compliance” in March and moves the application into the certification phase - bringing TMC closer to potentially becoming the first company to secure a U.S.-backed commercial deep-sea mining permit.

A structured regulatory pathway toward 2027

Under NOAA’s established review process, the application will now be certified and published in the Federal Register, triggering the next phase of regulatory scrutiny. This includes the development and release of a draft Environmental Impact Statement (EIS), which will be subject to public consultation.

Following stakeholder feedback, NOAA will finalize the EIS and decide on whether to grant both an exploration license and a commercial recovery permit. TMC has indicated that it expects the process to conclude by the end of the first quarter of 2027.

The application itself represents a significant evolution in regulatory design. Filed under NOAA’s new consolidated review framework, it integrates exploration and commercial recovery into a single process that streamlines what has historically been a fragmented and protracted pathway.

“This determination marks an important step forward in NOAA’s transparent, rules-based process,” said Gerard Barron, Chairman and CEO of TMC. “It brings us ever closer to providing the U.S. with a new, abundant and lower-impact source of critical metals.”

Scaling up: from exploration to commercial recovery

The scope of TMC USA’s application underscores the scale of its ambitions. The consolidated submission covers approximately 65,000 km2 of seabed in the CCZ, more than double the 25,000 km2 footprint outlined in its initial 2025 commercial recovery application.

This expanded area reflects both the company’s confidence in its resource base and the strategic importance of polymetallic nodules in global supply chains. Unlike terrestrial mining, these nodules sit unattached on the ocean floor, potentially allowing for extraction without drilling or blasting.

Barron emphasized the depth of preparation behind the application: “It reflects the sheer scale of scientific, environmental and engineering effort and expertise that have been brought to bear on this project over the last 15 years.”

Indeed, TMC’s submission draws on more than a decade of environmental baseline studies and offshore testing, forming what the company describes as one of the most comprehensive datasets ever assembled for deep-sea mineral resources.

Industry reaction: opportunity meets scrutiny

The announcement has sparked renewed debate across the mining and environmental communities, highlighting both the opportunity and the controversy surrounding deep-sea mining.

“From a supply chain perspective, this is a potentially transformative moment,” said Dr. Helena Ortiz, a critical minerals analyst at Global Resource Strategies. “The CCZ could materially alter the availability of battery metals at a time when electrification demand is accelerating.”

Ortiz noted that Western governments, particularly the United States, are increasingly seeking alternatives to land-based mining dominated by a handful of jurisdictions. “A domestic regulatory pathway under NOAA provides a strategic hedge against geopolitical risk in critical minerals,” she added.

However, environmental stakeholders remain cautious. Marine ecologist Professor Daniel Kwame of the Ocean Sustainability Institute warned that the science is still evolving. “Even with extensive baseline data, the deep ocean remains one of the least understood ecosystems on Earth,” he said. “The precautionary principle should guide decision-making at every stage.”

NOAA’s long-standing role in seabed mining oversight

NOAA’s involvement in deep-seabed mining dates back more than four decades, positioning the agency as a central authority in U.S. ocean resource governance. Since the 1970s, it has conducted environmental research in the CCZ, monitored early nodule collection trials and developed regulatory frameworks under DSHMRA.

The agency issued its first implementing regulations for exploration licenses in 1981, followed by rules governing commercial recovery permits in 1989. Its oversight has remained active, though commercial-scale mining has yet to commence under U.S. jurisdiction.

Notably, NOAA also produced a Programmatic Environmental Impact Statement in 1981 covering multiple seabed regions, including the CCZ, laying the groundwork for future project-level assessments.

The current review of TMC’s application is therefore both a continuation of this legacy and a test of how legacy frameworks adapt to modern environmental and technological expectations.

The broader geopolitical and economic context

TMC’s progress comes amid intensifying global competition for critical minerals essential to energy transition technologies, including electric vehicles, renewable energy systems and advanced manufacturing.

Polymetallic nodules in the CCZ are particularly attractive because they contain high concentrations of multiple metals in a single ore source. This contrasts with many terrestrial deposits, which often require more complex and environmentally disruptive extraction processes.

“Deep-sea mining is increasingly being framed as part of the solution to decarbonisation,” said mining investor James Caldwell of Frontier Capital. “But it has to clear a very high bar in terms of environmental stewardship and social license.”

The U.S. approach, via NOAA and DSHMRA, also differs from the international regime governed by the International Seabed Authority (ISA), which regulates mining in areas beyond national jurisdiction. TMC’s application under U.S. law highlights an alternative pathway that could influence how other countries approach seabed resources.

Efficiency gains through consolidated permitting

A key innovation in TMC’s application is the consolidated permitting process, which allows exploration-phase data to feed directly into commercial recovery assessments. This reduces duplication and accelerates timelines while maintaining regulatory rigor.

Industry observers say this model could become a template for future projects. “If this works as intended, it could significantly de-risk early-stage investment in seabed mining,” said Laura Chen, a mining policy specialist at Resource Governance Advisory. “Investors want clarity and predictability, and a streamlined process helps deliver that.”

However, Chen cautioned that efficiency must not come at the expense of transparency. “Public consultation during the EIS phase will be critical in ensuring that all stakeholder concerns are properly addressed.”

What comes next for TMC and the sector?

With full compliance now confirmed, TMC’s immediate focus will shift to navigating the certification stage and preparing for the environmental review process. The publication of the draft EIS will likely become a focal point for both industry support and environmental opposition.

For the broader sector, NOAA’s determination signals that deep-sea mining in U.S.-regulated contexts is moving from theory to reality. While significant hurdles remain, including environmental approvals, technological validation and market acceptance, the pathway is becoming clearer.

As Barron put it: “We now have sufficient information to move efficiently and responsibly into commercial operations under NOAA’s oversight.”

Whether that vision materialises will depend not only on regulatory outcomes but also on the industry’s ability to balance resource development with environmental responsibility - arguably the defining challenge of the next frontier in mining.

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Image courtesy of Richard Baron | The Metals Company