By Penny Langford
The United States is preparing to open a new frontier in the global race for resource security, as the Department of the Interior moves to authorize the first commercial-scale deep-sea mining lease sale in the nation’s history.
On July 17, 2026, the Bureau of Ocean Energy Management (BOEM) finalized a proposal to auction approximately 33 million acres of seabed in the federal waters surrounding American Samoa. Scheduled for November 19, 2026, the auction marks a decisive shift in U.S. mineral policy, aimed at securing domestic supplies of the metals essential to high-capacity batteries and advanced military hardware.
The move comes as the global mining news landscape increasingly shifts toward the "blue economy," with the U.S. seeking to bypass international regulatory gridlock by utilizing domestic legal frameworks to tap into vast underwater mineral deposits.
The PACM-1 Auction: Scope and Scale
The proposed auction, designated as the American Samoa OCS Mineral Lease Sale (PACM-1), will take place in Camarillo, California. It features two massive offshore blocks located east of the island of Ta‘ū. The first block spans roughly 16.3 million acres, while the second covers approximately 15.1 million acres.
According to BOEM’s Marine Mineral Administration (MMA), the auction will be conducted as an oral ascending (clock) auction. This format requires qualified bidders to attend in person, though the proceedings will be livestreamed for public transparency. Winning bidders will secure 20-year commercial mineral leases, providing a long-term runway for exploration and eventual extraction.
The financial stakes are significant. Minimum bids have been set at $3 million per block, with a combined minimum of $6 million for the entire area. While royalty structures are still being finalized, preliminary documents suggest a value-based system where operators would pay 2% of the mineral production value for the first five years, escalating to 5% thereafter.
Strategic Drivers: The 2025 Executive Order
This historic auction is not an isolated event but the direct result of a 2025 Executive Order designed to insulate the American supply chain from foreign volatility. By targeting polymetallic nodules: potato-sized rocks rich in nickel, cobalt, copper, and manganese: the U.S. aims to reduce its reliance on terrestrial mines in regions with high geopolitical risk.
For investors identifying critical minerals stocks to buy 2026, the focus has shifted toward companies with the technical capability to operate in the ultra-deep environments of the Pacific. The nodules in the American Samoa region are particularly attractive due to their grades. Industry data indicates manganese concentrations of up to 30%, with nickel and copper grades often exceeding those found in many active land-based mines.
The timing of the auction is critical. As the energy transition accelerates, the demand for cobalt and nickel for lithium-ion batteries has created a structural supply gap. This deep-sea initiative is part of a broader strategy that may soon include additional lease sales in the Commonwealth of the Northern Mariana Islands and off the coast of Alaska.
Technical Challenges of the Deep Seabed
Mining at depths ranging from 1,400 to 6,000 meters (4,600 to 20,000 feet) presents an engineering challenge unlike anything in traditional open-pit or underground mining. The process involves robotic collectors: large, tracked machines that crawl across the silty seabed, suctioning up nodules and pre-processing them before pumping the slurry to a surface vessel.
"The technology is ready, but the scale of the environment is humbling," noted one engineering consultant familiar with the project. "You are operating in total darkness, under immense pressure, managing thousands of meters of riser pipe. It’s more akin to space exploration than traditional mining."
Winning a lease on November 19 does not grant an immediate right to mine. Successful bidders must first conduct extensive exploration to confirm deposit density. Following exploration, companies must submit a detailed Mining Plan, which will trigger a rigorous National Environmental Policy Act (NEPA) review before any commercial extraction can begin.
Local Opposition and Environmental Risks
The federal push for deep-sea mining has met stiff resistance from American Samoa’s political leadership and local communities. Governor Lemanu P. S. Mauga has previously expressed concerns regarding the impact on traditional fishing grounds and the potential for long-term ecological damage.
Environmental groups have already signaled their intent to challenge the auction in federal court. Their primary concern centers on the "sediment plume": the cloud of silt kicked up by collectors that could drift for miles, potentially smothering deep-sea organisms and disrupting the food chain.
"We are moving into an environment we barely understand," said a representative from a Pacific-based conservation group. "The risks to biodiversity and the carbon-sequestration capacity of the deep ocean are too great to ignore for a short-term mineral gain."
The legal battle will likely hinge on the Outer Continental Shelf Lands Act (OCSLA). Because the United States has not ratified the United Nations Convention on the Law of the Sea (UNCLOS), it is not bound by the International Seabed Authority (ISA) regulations that govern international waters. Instead, the U.S. is asserting its right to manage its Exclusive Economic Zone (EEZ) under domestic law: a move that could set a precedent for other nations with large maritime territories.
Market Snapshot: Critical Minerals (July 2026)
The following table reflects the current market position for the primary metals targeted in the American Samoa auction.
| Commodity | Current Price (USD/mt) | 24h Change | 2026 YTD Trend | Deep-Sea Grade (Est.) |
|---|---|---|---|---|
| Nickel | $18,450 | +1.2% | Bullish | 1.1% – 1.4% |
| Cobalt | $28,100 | -0.4% | Stable | 0.1% – 0.2% |
| Copper | $9,200 | +0.8% | Bullish | 0.8% – 1.2% |
| Manganese | $4,850 | +2.1% | Aggressive | 25% – 30% |
Source: Skillings Mining Intelligence Market Desk
The Path to November
As the November 19 auction date approaches, the industry is closely watching for the release of the Final Leasing Notice (FLN). This document will contain the definitive lease terms, environmental stipulations, and the final list of blocks available for bidding.
The outcome of this auction will serve as a litmus test for the viability of deep-sea mining as a pillar of U.S. energy independence. If successful, the American Samoa sale could unlock a multibillion-dollar industry, providing the raw materials needed for the next generation of mine electrification and renewable energy storage.
However, the road to extraction remains long. Between the reform of mining permits and the ongoing legal challenges from environmentalists, the companies that win these leases will need both deep pockets and high technical resolve to bring these minerals to the surface.
For now, the global mining community remains focused on American Samoa. The PACM-1 auction represents more than just a lease sale; it is the first major move in a geopolitical game where the board is the ocean floor, and the prize is the future of the American industrial base.
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LinkedIn: The U.S. breaks new ground with a 33-million-acre deep-sea mining auction off American Samoa. As the race for critical minerals heats up, is the seabed the answer to domestic supply chain security? Read the full analysis from Skillings Mining Intelligence. #MiningNews #DeepSeaMining #CriticalMinerals #EnergyTransition
X (Twitter): BREAKING: US announces first-ever commercial deep-sea mining auction. 33M acres off American Samoa to be leased for polymetallic nodules. Nov 19 auction date set. Full story at @SkillingsMining. #Mining #CriticalMinerals2026
