U.S. Metal Ore Mining — An Investor's Primer (Industry-Group Level)

NAICS 2022 code 2122 — Metal Ore Mining (United States)

A plain-language guide for public- and private-market investors. NAICS (North American Industry Classification System) is the federal code system that defines industries. This is a rollup page for the four-digit industry group 2122, which pools four distinct mining industries — iron, precious metals, base metals, and critical/other metals. The value of reading it at this level is the contrast across those four: who is big, which commodity, which way price and demand are pointing, who owns the mines, and how you'd buy in. Business figures (firms, revenue, jobs, concentration) are U.S. Census Bureau ground truth for this exact level; physical production and reserves come from the U.S. Geological Survey (USGS) and are labeled by source. Figures carry numbered citations to the Sources list. Where an official figure is withheld or absent, that is stated, not filled in.

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1. Overview

Metal Ore Mining (NAICS 2122) is the part of the U.S. economy that digs metal-bearing rock out of the ground and does the first-stage processing (beneficiation — crushing, grinding, concentrating) that turns ore into a shippable product: iron pellets, gold-silver doré, copper concentrate, rare-earth concentrate. It stops at the mine gate. Smelting, refining, and manufacturing (steel, wire, magnets, batteries) are downstream and sit in other codes.

It is a small-headcount, high-value, strategically outsized sector: about 204 firms and 337 mine sites employing roughly 41,300 people [1][2], booking about $34.2 billion of revenue in 2022 [1] and mining metal worth well north of that at 2025 prices [3–14]. But "Metal Ore Mining" is not one business — it is four different commodity businesses stapled together by the classification system, and they behave very differently:

• Iron ore (21221) — a tiny, ultra-concentrated adjunct of the steel industry, uniquely captive (the miners own the mills).
• Gold and silver (21222) — precious-metal price-takers whose fortunes ride a monetary metal, currently at record highs.
• Copper, nickel, lead, zinc (21223) — base metals, the largest slice by revenue, carried by the copper-and-electrification growth story.
• Other/critical metals (21229) — rare earths, uranium, lithium, molybdenum and more, a national-security supply story where Washington is now an active investor.

The one economic fact they all share, and the through-line of this primer: these are price-takers in a commodity business. They sell undifferentiated ore into globally quoted markets at prices they cannot set, so revenue and margin ride the commodity cycle rather than any pricing power. Where they diverge — and the reason a rollup view is worth your time — is in which cycle they ride, how concentrated and integrated they are, who owns them, and how (or whether) you can invest.

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2. What's inside — the four children and how they differ

NAICS nests from broad sectors (2-digit) down through industry groups (4-digit, like 2122), industries (5-digit), and national industries (6-digit). Unusually, all four children of 2122 are themselves one-child "pass-through" industries — each 5-digit code maps to a single 6-digit leaf — so the four children below are the whole story. Here is how they contrast:

Reading across the row tells you almost everything. Base metals are the revenue heavyweight; gold/silver is the second-biggest and the deepest for public investors; iron is small and structurally different (captive, integrated, foreign-strategic); "other" is the smallest slice but the biggest policy story. Three of the four sell into open global markets and pay no federal production royalty on public land; iron ore is the odd one out — it is consumed inside its owners' own steel mills and sits on state/private land in Minnesota.

Scope note — what's not in 2122 (so you don't double-count): steel mills and direct-reduced-iron plants (NAICS 331110); smelting and refining of copper/lead/zinc and rare-earth separation, uranium enrichment, lithium conversion, and magnet/battery making (all manufacturing, NAICS 331/325); coal and other nonmetallic mining (2121, 2123); and contract exploration and mine-site prep, "mining support activities" (213114/213115) [15].

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3. How big it is

Business figures — U.S. Census, our ground truth for NAICS 2122

The rows below are the group's own federal statistics — not a re-sum of the children, though (reassuringly) they nearly match one. Establishments and employment tie out to the children exactly; receipts tie to rounding; the firm count is slightly lower than the sum of the four children (204 vs. 207) because a company operating in two of these industries is counted once at the group level but in each child — a normal feature of Census counts, not an error.

That works out to roughly $106,000 of payroll per worker — well above the U.S. private-sector average, the signature of a capital-intensive extraction sector [2].

How the four stack up (and how concentrated each is):

Two things jump out. First, gold/silver has the most establishments and firms (a long tail of small producers and explorers) while copper/base metals has the most revenue (a handful of huge open-pit mines) — different industrial structures. Second, and importantly for competition analysis: the group looks far less concentrated than any of its parts. The "top-4-firm concentration ratio" (CR4 — the share of revenue held by the four largest firms) is 56.5% for the group but 74–99% inside every child [1]. The Herfindahl-Hirschman Index (HHI, a 0–10,000 concentration gauge; the U.S. antitrust agencies treat >1,000 as "moderately concentrated") is a modest 1,021.9 for the group [1] — yet it is suppressed by Census for iron, gold/silver, and copper (too few firms to publish without exposing them) and is 1,889 for "other" [1]. The lesson: the group's diversity is a composition effect. Each commodity is a near-oligopoly; the group looks competitive only because it pools four oligopolies that don't compete with each other — an iron miner is not bidding against a gold miner. Don't read 56.5% as a competitive market.

Physical production and reserves — USGS, real units (a different lens)

Census counts business revenue; USGS counts metal and mine value. The two never tie to a single number, because they cover different years and, for some metals, byproduct output from mines classified elsewhere. Here is the physical picture, 2025 unless noted [3–14]:

(t = metric tons; Mt = million metric tons; oz = troy ounces.) Total U.S. nonfuel mineral production was worth about $112 billion in 2025; the metal-ore commodities here are a large part of that, and — critically — a disproportionate share of the country's supply-chain risk [14].

A rollup insight the revenue table hides: by physical mine value at 2025 prices, the ranking reorders. Gold's price surge pushed gold-plus-silver (~$18 billion) ahead of copper-plus-base-metals (~$14 billion), reversing the 2022 revenue order where copper led. In other words, which child is "biggest" depends on the year and the metric — a direct consequence of every one of these being a price-taker.

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4. The investable universe

There is no single "metal-ore-mining" stock, and the routes differ sharply by child. Tickers and buckets below are pointers, not valuations — market caps swing hard with the metal cycle, so check live quotes. (Company figures come from SEC filings, not the federal ground truth.)

Public producers & miners, by child:

• Iron (21221): the only U.S.-listed way in is Cleveland-Cliffs (NYSE: CLF) — really a leveraged bet on integrated flat-steel plus captive ore, not a clean ore price. The old U.S. Steel ticker is gone: Nippon Steel of Japan bought it in June 2025 and now owns the Minntac and Keetac ore operations [3][16]. Broader exposure comes from global iron majors (Vale, Rio Tinto, BHP, Fortescue) and a steel ETF (VanEck Steel, SLX) [29].
• Gold & silver (21222): the deepest public menu — producers Newmont, Barrick, Kinross, Coeur, Hecla; the single largest U.S. mine, Nevada Gold Mines (a Barrick/Newmont joint venture, or JV), alone produces roughly half of U.S. gold; plus royalty/streaming financiers Franco-Nevada, Wheaton Precious Metals, Royal Gold [4][5].
• Copper & base metals (21223): Freeport-McMoRan (NYSE: FCX) is the U.S. copper bellwether (~60% of national copper output); Rio Tinto (Kennecott/Bingham Canyon, Utah); Teck Resources (Red Dog, the world's largest zinc mine); plus Hudbay, South32, Hecla, Talon Metals (the sole U.S. primary nickel mine) and Taseko [18][19].
• Other/critical (21229): near-monopoly single-commodity names — MP Materials (NYSE: MP) in rare earths (with the U.S. Department of Defense, DoD, as a major holder and a price floor); Energy Fuels, Cameco, Uranium Energy, Ur-Energy in uranium; Lithium Americas (Thacker Pass) and Albemarle in lithium; Freeport again for primary molybdenum [20].

Royalty & streaming layer (across all four): companies that own a slice of a mine's revenue rather than operating it — Mesabi Trust (NYSE: MSB) on one iron mine; Franco-Nevada, Wheaton, Royal Gold on precious and base metals; Uranium Royalty on uranium. Alaska Native corporation NANA collects a ~$372-million-a-year net-proceeds royalty on the Red Dog zinc mine [17][19].

Major private, foreign & government owners (a large share of the sector is not public): Nippon Steel (iron); AngloGold Ashanti, Waterton, Paulson-backed developers (gold); ASARCO (Grupo México), Doe Run (private, largest U.S. lead), Nyrstar (Trafigura, zinc), the NewRange Glencore–Teck nickel JV (copper/base); Rio Tinto (which bought lithium producer Arcadium for $6.7 bn in 2025) and, newly, the U.S. Treasury as a preferred-equity holder in MP Materials (other/critical) [16][19][20][21]. Foreign ownership is pervasive in every child.

Mineral-rights & royalty ownership — owning the ground and collecting a royalty — is the classic private-capital angle across the whole group (the State of Minnesota is the single largest iron-range mineral owner; fee minerals, net-smelter-return royalties, and streams elsewhere).

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5. How the money works (and where the children diverge)

Every child runs the price-taker playbook: returns come from volume × (price − cost) plus byproduct credits, against a price set by a global market. The standard cost yardstick is all-in sustaining cost (AISC — cash cost plus sustaining capital and royalties per unit), though for iron and base metals it is non-standardized and inconsistently disclosed. Every ore body is a wasting asset that depletes and must be replaced by drilling or acquisition, and a federal percentage-depletion allowance shelters some cash flow from tax [3][4][18]. So far, so uniform. The interesting part is the divergence:

• Which market sets the price. Iron ore is benchmarked to 62%-iron fines delivered to China (~$99/t in 2025), a Chinese-demand-driven number [3]. Gold and silver price off London and COMEX (the New York futures exchange) as monetary metals [4][5]. Copper, zinc, lead and nickel price off the London Metal Exchange (LME) and COMEX [18]. Rare earths, lithium, antimony and tungsten are thin, opaque markets where China is usually the marginal price-setter [10][12].
• Captive vs. merchant. Iron ore is the anomaly: most U.S. tonnage is transferred internally into the miners' own blast furnaces at cost, not sold — so its market value is partly invisible in business revenue [3]. The other three sell concentrate/doré into open markets.
• Cost position on the global curve. U.S. taconite is low-grade and high-fixed-cost — expensive globally but competitive delivered to Great Lakes mills [3]. U.S. gold and copper sit mid-curve; critical-mineral producers frequently sit above Chinese costs, which is the entire competitive problem for that child [10][12].
• Byproduct credits. Base-metal and precious-metal mines net byproducts (gold, silver, molybdenum) against primary-metal cost, which can make a mine look very cheap; iron ore has essentially none [18][4].
• Royalties and the 1872 law. Under the General Mining Law of 1872, hardrock minerals on federal public-domain land pay no federal production royalty — a real U.S. cost advantage for gold, silver, copper and the critical metals [22]. Iron is different: it sits on state/fee land and pays Minnesota a taconite production tax plus private royalties [3].
• Government money (new, and unique to 21229). The critical-minerals child alone enjoys DoD equity, price floors, and Department of Energy (DOE) loans that put a partial floor under favored producers — support the other three do not get [20].

The upshot: in a downturn, an iron miner idles a whole mine-plant system to protect cash; a gold miner rides a metal that often rises when the economy wobbles; a copper miner leans on byproduct credits and a structural demand story; and a lithium/rare-earth developer either burns through a cyclical trough on subsidy or dilutes shareholders to survive.

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6. Demand drivers

Four different demand stories under one roof:

• Iron → steel, and little else. ~98% of iron ore feeds steelmaking, so demand tracks U.S. steel output and its end-markets (autos, construction, machinery). The structural headwind is the shift from blast furnaces (BF), which eat pellets, to electric-arc furnaces (EAF), which run on scrap — capping ordinary pellet demand, though premium "clean iron units" for high-quality EAF steel are a partial offset [3].
• Gold → money; silver → half-money, half-industry. Gold demand is jewelry, bars, and above all central-bank buying and safe-haven flows tied to real interest rates — often counter-cyclical, which is why gold is at record highs while iron is soft. Silver is a hybrid: roughly half industrial (solar panels, electronics, electrification) [4][5].
• Copper → electrification (the structural growth story); zinc/lead → mature. Copper is the wiring of grids, motors, EVs and data centers; the International Energy Agency (IEA) projects global copper demand up ~30% by 2040 with a possible supply shortfall [28]. Zinc (galvanizing) and lead (batteries, heavily recycled) are mature and GDP-linked; nickel is, for the U.S., an import story in global surplus [18].
• Other → the security-and-transition story. Rare-earth magnets for EV motors and defense, lithium for batteries, uranium for a reviving nuclear sector (life-extensions, small reactors, AI-data-center power), plus antimony/tungsten/beryllium for defense. The cross-cutting theme is de-risking supply chains away from China — which creates much of the new government demand [10][12][20][28].

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7. Regulation

The regulatory stack splits cleanly along the same line as the economics — federal-land metals vs. Minnesota iron:

• Land tenure. Gold, silver, copper and the critical metals are largely mined on federal public-domain land under the General Mining Law of 1872, administered by the Bureau of Land Management (BLM), with no federal royalty [22][23]. Iron is the exception: the taconite district sits on state, school-trust and fee land, so royalties and a taconite production tax flow to Minnesota and private owners rather than the BLM [3].
• Safety at every mine is overseen by the Mine Safety and Health Administration (MSHA) [24].
• Environmental permitting runs through the Environmental Protection Agency (EPA) and the National Environmental Policy Act (NEPA) review, plus Clean Water Act discharge permits and long-tail CERCLA (Superfund) cleanup liability that can outlive the mine — the routine gating step for new capacity [18]. Iron adds air rules for pelletizing (the taconite NESHAP) and Minnesota sulfate standards; uranium adds the Nuclear Regulatory Commission (NRC) [3].
• Trade & industrial policy — now a first-order force. Copper carries a 2025 Section 232 tariff (50% on semi-finished/copper-intensive imports; refined cathode excluded); critical minerals draw the Inflation Reduction Act (IRA) Section 45X manufacturing credit, Defense Production Act (DPA) Title III investment, and DoD/DOE capital — mirrored by Chinese export controls. Steel tariffs indirectly support iron demand [20][25][26]. Most of these metals are on the 2025 USGS Critical Minerals List (copper and lead newly added; silver added late 2025) [25]. Investor implication: model policy support contract-by-contract; do not capitalize an indefinite subsidy stream.

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8. Consolidation

Concentration is extreme inside each child but for different reasons, and consolidation is the dominant strategic motion in all four:

• Iron: near-total concentration (CR4 99.4%), driven by integration — Cleveland-Cliffs rolled up the merchant iron-ore business and then bought steelmakers to consume its own ore, and Nippon Steel's 2025 U.S. Steel purchase (closed under a national-security "golden share") put more of the range under foreign strategic control [3][16].
• Gold/silver: depletion-driven M&A — mines run down, so growth is bought (Newmont-Newcrest; the Barrick/Newmont Nevada JV) [4].
• Copper/base: "copper is the prize" — BHP's failed ~$49 bn bid for Anglo American was explicitly a copper play, and buying a permitted deposit beats discovering one [18].
• Other/critical: down-cycle distress consolidation (Rio Tinto's $6.7 bn Arcadium lithium buy) plus vertical integration into separation and magnets, with government offtake and price floors themselves becoming a competitive edge [20][21].

Across all four, barriers to entry are extreme — multi-billion-dollar capex, ~29-year U.S. discovery-to-production timelines, and permitting gauntlets — which is why the national numbers are dominated by a handful of incumbents [18].

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9. Risks

1. Commodity-price cyclicality — the central risk in every child. These are price-takers; revenue and margins are levered to volatile prices they cannot control, and equities swing more than the underlying metal. Recent moves show the range: iron's realized price fell ~$156 → ~$89/t across 2021–2025; lithium fell ~86% and rare earths >50% from 2022 peaks; while gold ran to record highs [3][10][12]. Peak-cycle earnings should not be capitalized as permanent, and mining dividends/buybacks are variable distributions, not bond-like income. Gold's strength and lithium's collapse happening at once is the whole point — diversification across children is real, but you get it by owning different children, not by owning "the group."
2. Demand-cycle & customer concentration — iron ≈ domestic steel output; copper ≈ construction/electrification; a downturn cuts volume and price together [3][18].
3. Cost inflation & execution — labor, diesel, power, reagents and steel often rise in the same boom that lifts prices.
4. Permitting, litigation & social license — multi-decade timelines and project-specific blocks (Pebble, Twin Metals, Rosemont) can strand capital [18].
5. Depletion & reserve replacement — every mine is a wasting asset; high near-term cash flow can just be the harvest of a finite resource [3][4][18].
6. Downstream & foreign dependence — the U.S. is a structural net importer of most refined metals (no primary lead or nickel refinery; only two copper smelters; China dominant in rare-earth separation), leaving domestic concentrate exposed to foreign processing [18].
7. Policy dependence (concentrated in 21229, spilling into copper) — the critical-minerals bull case increasingly rests on subsidies and offtake that politics can remove (the scheduled §45X phase-down is the warning) [20][25].
8. Ownership / geopolitics — pervasive foreign control (Nippon in iron; Grupo México, Trafigura, Glencore, Rio in base metals) and reliance on trade policy for demand [16][18].

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10. How to invest & outlook

There is no one-ticket way to own "metal ore mining," and you probably shouldn't want one — the four children are different bets. Match the route to the thesis:

• Producer / miner equities give leveraged exposure with a boom-bust capital-return pattern (dividends and buybacks at peaks, cuts or dilution in troughs): CLF for leveraged steel-plus-iron; Newmont/Barrick/Coeur/Hecla for gold and silver; FCX for large-cap U.S. copper; MP/Energy Fuels/Cameco/Lithium Americas for the critical-mineral theme [3][4][18][20].
• Royalty & streaming companies — Mesabi Trust (iron), Franco-Nevada/Wheaton/Royal Gold (precious/base), Uranium Royalty — own revenue interests, not operating risk: they keep margin when prices fall and avoid capital calls, historically the best risk-adjusted way to own mining cash flow, at the cost of less upside [17][19].
• Exchange-traded funds (ETFs — pooled, exchange-listed baskets) are the cleanest one-ticket exposure to a theme: a steel ETF (SLX) for the iron/steel chain, gold-miner and physical-metal ETFs, copper-miner ETFs, and uranium/rare-earth/lithium thematic funds — each of which includes non-U.S. and downstream holdings [29].
• Private-market routes — direct or private-equity ownership of operators and single-asset developers, and the classic mineral-rights / royalty angle (own the ground, collect a royalty without operating exposure). In critical minerals, add government-adjacent structured capital (DOE loans, DoD/DPA preferred equity, transferable §45X credits) [19][20].

Outlook (forward-looking judgment, not reported fact). The four cycles are, unusually, out of phase — which is the strongest argument for viewing 2122 as four industries, not one:

• Iron: soft near-term (2025 volumes fell ~16% on mine idlings and weak prices), betting structurally on premium clean-iron products as U.S. steel keeps shifting to EAF [3][30].
• Gold/silver: at a cyclical peak on record prices — record margins today are the top of a cycle, not a new baseline [4][5].
• Copper/base: structurally constructive on copper, cyclical near-term — durable electrification demand meets throttled supply and supportive policy, but near-term prices stay hostage to Chinese demand and tariffs; zinc/lead mature, nickel an import story in surplus [18][28].
• Other/critical: constructive but cyclical, distinguished by active U.S. national-security underwriting of a favored subset — with the sharpest risk being financing a high-cost project at a price peak and reaching production after the market turns to oversupply [20][28].

Bottom line: NAICS 2122 is a $34-billion, ~41,000-worker rollup of four commodity businesses that share one trait — they are all price-takers — and little else. Base metals are the revenue anchor, precious metals the deepest public menu and (at 2025 prices) the largest by physical value, iron the small captive outlier, and critical minerals the policy story. The group HHI of ~1,022 makes it look competitive; that is an illusion of aggregation. Invest in the child whose commodity cycle and structure you actually want to own.

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Data-quality notes

• Business statistics (firm/establishment counts, receipts, payroll, concentration ratios) are U.S. Census Bureau ground truth for NAICS 2122: 2022 Economic Census and 2023 County Business Patterns. The two programs use different years and definitions, so counts should not be subtracted across them to infer openings/closures. The HHI is published for the group (1,021.9) and for child 21229 (1,889) but suppressed for iron, gold/silver, and copper — we do not estimate the suppressed values [1][2].
• Rollup arithmetic: establishments (337) and employment (41,280) equal the sum of the four children exactly; receipts tie to rounding; the group firm count (204) is below the children's sum (207) because multi-industry firms are counted once at the group level.
• Physical production, prices, reserves, and trade are USGS Mineral Commodity Summaries 2026 and EIA (uranium); "e" = estimated, and these agencies revise between editions. U.S. lithium output is withheld by USGS and is not stated here.
• Company figures, tickers, and ownership are from SEC filings and company disclosures, not federal statistics; market-cap and valuation references are order-of-magnitude anchors that move with the metal cycle.

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Sources

1. U.S. Census Bureau, 2022 Economic Census — Summary Statistics & Concentration by Industry (EC2200BASIC), NAICS 2122 and children: firms, receipts, CR4/CR8/CR20/CR50, HHI. https://data.census.gov/table/ECNBASIC2022.EC2200BASIC
2. U.S. Census Bureau, 2023 County Business Patterns, NAICS 2122 and children: establishments, employment, annual and Q1 payroll. https://data.census.gov/table/CBP2023.CB2300CBP
3. U.S. Geological Survey, Mineral Commodity Summaries 2026 — Iron Ore (Feb 2026). https://pubs.usgs.gov/periodicals/mcs2026/mcs2026-iron-ore.pdf
4. U.S. Geological Survey, Mineral Commodity Summaries 2026 — Gold. https://pubs.usgs.gov/periodicals/mcs2026/mcs2026-gold.pdf
5. U.S. Geological Survey, Mineral Commodity Summaries 2026 — Silver. https://pubs.usgs.gov/periodicals/mcs2026/mcs2026-silver.pdf
6. U.S. Geological Survey, Mineral Commodity Summaries 2026 — Copper. https://pubs.usgs.gov/periodicals/mcs2026/mcs2026-copper.pdf
7. U.S. Geological Survey, Mineral Commodity Summaries 2026 — Zinc. https://pubs.usgs.gov/periodicals/mcs2026/mcs2026-zinc.pdf
8. U.S. Geological Survey, Mineral Commodity Summaries 2026 — Lead. https://pubs.usgs.gov/periodicals/mcs2026/mcs2026-lead.pdf
9. U.S. Geological Survey, Mineral Commodity Summaries 2026 — Nickel. https://pubs.usgs.gov/periodicals/mcs2026/mcs2026-nickel.pdf
10. U.S. Geological Survey, Mineral Commodity Summaries 2026 — Rare Earths. https://pubs.usgs.gov/periodicals/mcs2026/mcs2026-rare-earths.pdf
11. U.S. Geological Survey, Mineral Commodity Summaries 2026 — Molybdenum. https://pubs.usgs.gov/periodicals/mcs2026/mcs2026-molybdenum.pdf
12. U.S. Geological Survey, Mineral Commodity Summaries 2026 — Lithium. https://pubs.usgs.gov/periodicals/mcs2026/mcs2026-lithium.pdf
13. U.S. Energy Information Administration, Domestic Uranium Production Report — 2025 Annual Data (2026). https://www.eia.gov/uranium/production/annual/index.php
14. U.S. Geological Survey, "Value of U.S. mineral production rose last year" ($112 billion, 2025), news release (2026). https://www.usgs.gov/news/national-news-release/value-us-mineral-production-rose-last-year-driven-precious-metals-prices
15. U.S. Census Bureau, 2022 NAICS Definitions — Metal Ore Mining (2122) and children 21221/21222/21223/21229. https://www.census.gov/naics/?details=2122&year=2022
16. Nippon Steel Corporation, "Nippon Steel Completes Acquisition of U.S. Steel" (June 18, 2025); White House national-security agreement / golden share. https://www.nipponsteel.com/en/newsroom/news/2025/20250618_100.html
17. Mesabi Trust, Form 10-K, FY ended January 31, 2026 (SEC) — iron-ore royalty structure. https://www.sec.gov/Archives/edgar/data/65172/000110465926046875/msb-20260131xars.htm
18. Freeport-McMoRan Inc., 2025 Form 10-K; and diversified base-metal producers (Rio Tinto/Kennecott, Teck/Red Dog, Hudbay, South32, Talon, Hecla). https://www.sec.gov/Archives/edgar/data/831259/000083125926000012/fcx-20251231.htm
19. Teck Resources Limited, 2025 Annual Report (Red Dog; NANA ~40% net-proceeds royalty, ~US$372 million in 2025); royalty/streaming sector (Franco-Nevada, Wheaton, Royal Gold, Uranium Royalty). https://www.teck.com/media/2025-Annual-Report.pdf
20. MP Materials Corp., Form 10-K (FY2025) and DoD partnership / NdPr price floor; U.S. uranium and lithium producers (Energy Fuels, Cameco, Lithium Americas) and DOE/DPA support. https://www.sec.gov/Archives/edgar/data/1801368/000180136826000008/mp-20251231.htm
21. Rio Tinto plc, completion of the $6.7 billion Arcadium Lithium acquisition (SEC Form 6-K, March 2025). https://www.sec.gov/Archives/edgar/data/863064/000162828025016021/ex04d06arcadiumcomplete.htm
22. General Mining Act of 1872; Congressional Research Service, The General Mining Law of 1872: Issues and Legislation (2024) — no federal royalty on public-domain hardrock minerals. https://www.congress.gov/crs-product/R48166
23. U.S. Bureau of Land Management, Mining and Minerals (43 CFR Subpart 3809). https://www.blm.gov/programs/energy-and-minerals/mining-and-minerals/about
24. U.S. Mine Safety and Health Administration (MSHA), Data and Reports. https://www.msha.gov/data-and-reports/statistics
25. U.S. Geological Survey, 2025 List of Critical Minerals (copper and lead added; silver added late 2025); IRA §45X phase-down (Public Law 119-21, 2025). https://www.usgs.gov/programs/mineral-resources-program/science/about-2025-list-critical-minerals
26. The White House, Presidential Proclamation / Section 232 — 50% tariff on semi-finished copper and copper-intensive derivatives, effective Aug 1, 2025 (refined cathode excluded). https://www.whitehouse.gov/presidential-actions/2025/07/adjusting-imports-of-copper-into-the-united-states/
27. U.S. Small Business Administration, Table of Small Business Size Standards (NAICS 2122 industries). https://www.sba.gov/document/support-table-size-standards
28. International Energy Agency, Global Critical Minerals Outlook 2026 — copper demand growth and potential supply shortfall; nuclear/battery demand. https://www.iea.org/reports/global-critical-minerals-outlook-2026/executive-summary
29. Fund pages: VanEck Steel ETF (SLX); Global X Copper Miners (COPX); gold-miner and physical-metal ETFs; Sprott Uranium Miners (URNM); VanEck Rare Earth & Strategic Metals (REMX); Global X Lithium & Battery Tech (LIT). https://www.vaneck.com/us/en/investments/steel-etf-slx/
30. Organisation for Economic Co-operation and Development, OECD Steel Outlook 2026 (~0.6% U.S. steel-demand growth). https://www.oecd.org/en/publications/oecd-steel-outlook-2026_99ab9b0c-en.html