Crushed & Broken Granite Mining (U.S.) — An Investor's Primer

NAICS 2022 code 212313 — Crushed and Broken Granite Mining and Quarrying

North American Industry Classification System (NAICS) is the federal system used to define industries. This primer uses U.S. government statistics as its spine and the public filings of listed producers for the market detail. Where a company figure covers more than just granite, that is flagged.

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1. Overview

Crushed granite is a commodity — a standardized bulk material sold by the ton — but it does not behave like oil, gold, or copper. There is no national price screen for it, and price is the wrong thing to watch. Granite aggregate is so cheap per ton and so heavy that trucking it can cost as much as the rock itself. Freight, not geology, defines the business.

That single fact changes everything an investor needs to know. Because no distant competitor can ship rock in cheaply, a permitted quarry is effectively a local mini-monopoly or oligopoly inside roughly a 30-to-50-mile haul radius. Producers hold real, durable local pricing power — aggregate prices have risen almost every year, including through recessions.[4][7][8] So this is still a cyclical commodity business, but the cycle shows up mostly in volumes (tons shipped, tied to construction activity), while unit price stays sticky. That is a gentler, less violent cycle than a classic price-taker like a gold miner or an oil driller.

Why an investor cares: aggregates are quasi-infrastructure — steady margins, structural annual price increases, very long reserve lives, and near-zero risk from the energy transition (roads, buildings, power lines, and data centers all consume rock). The catch is that there is no pure-play "granite" stock and no royalty/streaming market of the kind metals investors know.

Ways in:

• Public markets — buy the diversified construction-aggregates majors (Vulcan, Martin Marietta and peers) that own granite quarries inside broader portfolios, or a broad materials/infrastructure exchange-traded fund (ETF). There is no granite-only equity or ETF.
• Private markets — own or back a quarry, a regional roll-up, or an integrated paving/materials business; or own the land and lease the mineral rights for a per-ton royalty.

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2. What it is, and what it excludes

Scope. NAICS 212313 covers establishments that develop granite quarry sites, mine or quarry crushed and broken granite (including geologically related rock — gneiss, diorite, and syenite except nepheline syenite), and preparation plants that beneficiate granite by basic mechanical steps such as crushing, screening, or grinding.[1] The code is defined by two things at once — the rock (granite) and the product form (crushed aggregate). Change either and you leave the code:

So 212313 deliberately excludes limestone (its much larger sibling), sand & gravel (its substitute), monument/dimension granite (the "pretty rock" business), and all downstream stone products. A vertically integrated company can own a 212313 quarry while its asphalt, concrete, and paving sites sit in other codes.[1]

Ownership mix. The economically significant tonnage sits with a handful of large, publicly traded, vertically integrated aggregates producers who run granite quarries alongside limestone, sand, asphalt, and concrete. Beneath them is a long tail of private, family, and private-equity (PE)-owned operators, plus foreign-domiciled building-materials groups (CRH, Heidelberg Materials, CEMEX, and Holcim's former U.S. arm, now Amrize). There is no meaningful royalty/streaming layer as exists in metals; here, mineral-rights economics run through private land leases and fee ownership.[7][8][14][16]

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3. How big it is

Two official lenses measure different things and must not be conflated: the Census counts the businesses classified in 212313; the U.S. Geological Survey (USGS) measures the physical tonnage of granite within total crushed stone.

3a. The industry as a set of businesses (Census)

County Business Patterns (CBP) is the Census Bureau's annual establishment-level count; its 2023 figures are the most recent. The Economic Census is a firm-based benchmark taken every five years. They differ by frame and method — use both for the range, not an average. One honesty note: the Census flags that large portions of the 2022 economic figures were statistically imputed (estimated), so treat them as solid benchmarks rather than precision measurements.[2]

Concentration. Among the 62 firms whose primary business is granite crushing, revenue is fairly concentrated: the four largest firms hold ~71% of industry revenue, the top 8 hold ~80.6%, the top 20 hold ~94.7%, and the top 50 hold ~99.7%; the Herfindahl-Hirschman Index (HHI, a standard concentration gauge that rises toward 10,000 as an industry approaches monopoly) is 1,665.6 — moderately concentrated.[2] This reflects the aggregates majors dominating the narrow granite-crushing set, even though the broader crushed-stone universe is fragmented (below).

Small-business context. The Small Business Administration (SBA) size standard for 212313 is 850 employees.[6] Since the entire national industry employs only ~5,000-6,000 people, virtually every granite-crushing firm qualifies as a "small business" — a sign of how locally scaled the activity is at the establishment level, even as ownership concentrates in a few large parents.

Where it is. Crushed granite is a Southeastern / Appalachian Piedmont business. Four states — North Carolina (~$913M), Georgia (~$784M), Virginia (~$498M), and South Carolina (~$297M) — account for roughly 80%+ of national granite-crushing revenue.[2] (Elberton, GA bills itself the "Granite Capital of the World," though much Elberton stone is dimension granite in code 212311.)

3b. The physical commodity (USGS)

USGS does not publish a standalone granite series; it reports granite as a share of total U.S. crushed stone, the aggregate universe 212313 belongs to:[4][5]

• Total U.S. crushed stone, 2025 (est.): ~1.5 billion metric tons, worth ~$27 billion, from ~1,400 companies operating ~3,500 quarries across all 50 states.[4]
• Granite's share: ~14% of crushed stone by tonnage → roughly 210 million metric tons of crushed granite per year. (This is a derived estimate — 14% × ~1.5 billion tons — not a directly reported granite figure; treat it as approximate.)[4]
• Average unit value, all crushed stone: $18.50/metric ton (2025), up from $17.50 (2024) and ~$12.69 (2020) — showing the price escalation that outpaces volume.[4][5]
• Employment (all crushed stone, MSHA source): ~71,200 quarry-and-mill workers.[4]
• Reserves: USGS calls U.S. stone reserves "adequate, except where special types are needed or where local shortages exist." The resource is geologically abundant; scarcity is locational and regulatory, not geological. USGS publishes no numerical granite reserve total.[4]
• Trade: essentially domestic — net import reliance ~1%.[4]

The undercount, plainly stated: the $3.12B Census figure counts only firms primarily in granite crushing. A great deal of granite is quarried by integrated producers whose primary code is limestone, sand-and-gravel, or a corporate segment — so the true economic footprint of granite in the ground is larger than the 212313 line suggests. The USGS tonnage and the Census dollars describe different universes, not contradictory ones.[1][2][4]

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4. The investable universe

There is no pure-play crushed-granite public company. Exposure comes through diversified aggregates producers that own granite quarries alongside limestone and other stone. All of the "key metric" figures below come from company filings and cover all aggregate types, not granite alone. Market caps are approximate mid-2026 order-of-magnitude figures, not federal or report statistics, and they move with the market.

Major private / foreign owners: Quikrete (a large private building-products group that took the formerly listed Summit Materials private in Feb 2025); Rogers Group (self-described largest privately owned U.S. aggregates company); Luck Companies / Luck Stone (large family-owned crushed-stone operator); and foreign strategics CRH, Heidelberg Materials, CEMEX, Holcim/Amrize.[10][14][15][16] A Martin Marietta management estimate puts roughly 67% of broad U.S. aggregate production in private hands and 33% public — a management figure for all aggregates, not an official granite statistic.[14]

The key investor takeaway: you cannot buy "granite," and the listed names carry it inside broad portfolios. Their leverage is to the construction cycle and local pricing power, not to a screen-traded commodity price.

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5. How the money works

Aggregates are the case where the generic "commodity price-taker" model partly breaks down — and understanding why is the single most important idea in this primer.

The freight-limited local-pricing model. Crushed granite sells for roughly $18-23 per ton at the quarry gate.[4][7][8] Trucking adds roughly $0.15-0.25 per ton-mile, which can double the delivered price within ~30-50 miles and makes the rock uneconomic beyond that. Vulcan reports that in 2025 about 80% of its aggregate shipped straight from quarry to customer by truck, ~15% moved by rail or barge to a distribution yard, and under 5% went long-haul by rail/water — and freight is generally passed through to the customer.[7] Two consequences follow:

1. Local pricing power. No distant competitor can undercut a quarry inside its haul radius, so each quarry is closer to a price-maker in its own market than a global price-taker. This is why aggregate prices rise even in downturns.[4][7][8]
2. Barriers are locational and regulatory, not geological. Granite is abundant; the scarce asset is a permitted quarry near where construction is happening. Zoning and community opposition make new urban-fringe quarries extremely hard to open, which protects — and enriches — incumbents. A permitted reserve in the path of growth is the crown-jewel asset.[4][7]

Are they price-takers? For volume, yes — tons swing with the construction cycle and producers cannot control that. For price, largely no — the freight moat lets them push structural annual increases. So the cycle hits volume and operating leverage, not unit price. The cleanest illustration: in 2024 Vulcan's shipments fell ~6% while its freight-adjusted price rose ~11%; Martin Marietta's shipments fell ~3.8% while price rose ~10%.[7][8]

Unit economics (per ton). The core equation is simple:

Cash gross profit per ton = freight-adjusted selling price − cash production cost − royalty.

For Vulcan in 2025 that was roughly $21.98 price − ~$10.65 cash cost ≈ $11.33 cash gross profit per ton — a ~50% cash margin, extraordinary for anything labeled "mining," and a direct product of local pricing plus operating leverage (fixed plant and permits mean each extra ton is highly profitable).[7]

Cost structure. The swing inputs are diesel and electricity (blasting, crushing, hauling), labor, explosives, wear parts, maintenance, royalties, and reclamation. Fuel matters: Martin Marietta estimates a 10% move in energy prices shifts its annual energy expense by ~$29 million.[8]

Capital intensity & depletion. Meaningful but not extreme — 212313 capital spending ran ~13% of revenue in 2022 ($413M on $3.12B).[2] Reserves are very long-dated (Vulcan ~73 years, Martin Marietta ~85 years at current rates) and depleted slowly, so geological replacement pressure is low — but plants, fleets, and permits wear out far faster than the rock, so sustaining capital is continuous.[7][8] A caution for investors: don't treat total capital spending as "sustaining" capital when a company is also building greenfield capacity.

Reserves & mineral rights. Producers either own the land (Vulcan: ~63% of reserves on owned land) or lease mineral rights and pay a per-ton or percentage royalty.[7] That lease/royalty stream is the private-investor analogue to a metals royalty — but it is bilateral, illiquid, and has no traded market. For U.S. tax, granite carries a percentage depletion allowance (a modest income shield): generally 14%, but crushed granite sold for common construction uses — road base, concrete aggregate, ballast, riprap, rubble — is taxed at the lower 5% rate, which covers most of this industry's output.[21]

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6. What drives demand

Crushed stone is a derived-demand product: ~72% goes to construction aggregate (mostly roads and concrete), 17% into cement manufacturing, 6% lime, 1% agriculture, ~4% other.[4] The demand stack:

1. Public infrastructure — the dominant swing factor. Highways and bridges are aggregate-intensive. The 2021 Infrastructure Investment and Jobs Act (IIJA) funds multi-year highway and bridge programs through fiscal year (FY) 2026 (e.g., the Bridge Formula Program alone ran $5.5B/year, FY2022-26). The looming reauthorization after FY2026 is the key catalyst-and-risk.[24]
2. Private nonresidential / industrial construction — data centers, semiconductor and battery plants, warehouses, and power infrastructure create concentrated regional demand.
3. Residential construction — interest-rate-sensitive; high rates cut volumes. Martin Marietta notes interest-rate-sensitive residential and private nonresidential work made up ~58% of its 2025 shipments — so financing conditions matter even to a rock producer.[8]
4. Repair, maintenance & resilience — road resurfacing and rebuilding provide a baseline; recycled concrete and asphalt are small but growing substitutes.[4]

Because granite specifically is a Southeastern product, its demand is levered to Sun Belt population growth and infrastructure — a structurally favorable tilt.[2] The near-term backdrop is soft, though: U.S. construction spending in May 2026 ran ~1.5% below a year earlier, and residential permits stayed weak.[25]

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7. Regulation

• Mine safety (MSHA). Granite quarries fall under the Mine Safety and Health Administration (MSHA) Metal/Nonmetal program. The headline event is the 2024 respirable crystalline silica final rule: it halves the permissible exposure limit to 50 micrograms per cubic meter (8-hour average) with a 25 µg/m³ action level, adding monitoring, engineering-control, and medical-surveillance costs. Granite is quartz-rich, so this bites — Metal/Nonmetal operators must comply by April 8, 2026.[18]
• Environmental (EPA & states). Dust and particulate matter fall under the Environmental Protection Agency (EPA) New Source Performance Standards for nonmetallic mineral processing (40 CFR Part 60, Subpart OOO); water discharge is governed by Clean Water Act effluent guidelines and National Pollutant Discharge Elimination System (NPDES) permits. But state agencies and local zoning boards are the binding constraint on new capacity.[19]
• Federal land (BLM) — mostly peripheral here. Unlike gold or copper (locatable minerals claimable under the 1872 Mining Law), crushed stone is a "common variety" saleable mineral: on federal land the Bureau of Land Management (BLM) sells or leases it at fair-market value (Materials Act; 43 CFR Part 3600). In practice, granite quarrying happens overwhelmingly on private/fee land, so BLM leasing is largely irrelevant to this industry — a sharp contrast with metals mining.[20]
• Royalties & taxes. No federal production royalty applies on private land. Several states levy severance/extraction taxes on stone (rates vary widely — there is no single national rate). The federal percentage depletion allowance (5%/14%, §5) is the main tax feature.[21]
• ESG. Lower-profile than fossil fuels: the axes are land disturbance, dust, silica, blasting, noise, truck traffic, diesel use, and reclamation. Aggregates also enable decarbonization (roads, transmission, renewables foundations, data centers), a narrative the majors lean on.

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8. Competitive dynamics & consolidation

• Local oligopolies, national roll-ups. Competition is fought quarry-by-quarry within haul radii, but ownership consolidates nationally. The majors have grown for two decades by buying regional and family operators — often cheaper than opening a greenfield quarry, because permitted reserves near growth markets are the prize and are extremely hard to permit anew.[4][7][8]
• The same-market test. Because the relevant market is local, national market share says little about how many quarries can economically serve a given county — which is exactly why acquisitions are underwritten market-by-market and why deals draw local antitrust scrutiny.
• Vertical integration runs both ways. Road builders (Construction Partners, Granite Construction) integrate backward into quarries to secure supply and capture materials margin; the aggregates majors integrate forward into asphalt and concrete in select markets.[7][11][13]
• Capacity is moving private. Quikrete's 2025 take-private of Summit Materials, plus foreign strategics buying U.S. aggregates, is steadily shrinking the public pure-play universe.[15]

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9. Risks

1. Construction-cycle cyclicality — the central risk, but muted on price. Volumes swing with public and private construction; a recession or funding gap cuts tons and operating leverage. Because the freight moat keeps per-ton price from collapsing, the cyclicality hits volume and margin dollars, not unit price — a genuinely different, less violent cycle than oil or metals.[4][7][8]
2. Infrastructure-funding cliff. IIJA highway authorization runs out after FY2026; a delayed or smaller reauthorization would remove a key demand pillar.[24]
3. Cost inflation. Diesel, electricity, labor, explosives, and equipment; margins are fuel-sensitive both ways.[8]
4. Permitting, zoning & community opposition. The binding constraint on growth — the same force that protects incumbents can strand a company's own expansion.[19]
5. Interest-rate sensitivity. High rates suppress residential and some private nonresidential demand.[8]
6. Localized reserve depletion / sterilization. Rock is ample nationally, but a producer can exhaust the reserves nearest its best customers, or see nearby housing/zoning "sterilize" usable rock — forcing longer, costlier hauls.[4]
7. Reclamation liabilities. Long-dated closure obligations (Vulcan carries an asset-retirement obligation of ~$456M plus reclamation bonds).[7]
8. Energy-transition / stranded-asset risk: LOW. Unlike coal or oil, aggregates face little existential transition risk — roads, buildings, grids, renewables, and data centers all consume rock. A meaningful defensive attribute versus fossil-fuel mining.

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10. How to invest & outlook

Public routes

• Producer equities are the only practical exposure: Vulcan (VMC) and Martin Marietta (MLM) are the cleanest large-cap aggregates plays; CRH and Amrize add cement and broader building-materials; Construction Partners (ROAD), Granite Construction (GVA), and Arcosa (ACA) mix materials with contracting; Eagle Materials (EXP) blends cement and aggregates. None is granite-only.[7][8][9][10][11][12][13]
• Return character — NOT the oil/metals boom-bust. Thanks to structural pricing and local moats, the aggregates majors deliver steadier, compounding margins and consistent (if modest-yield) dividends, and trade at premium, infrastructure-like multiples. Distributions are steady, not windfall: Vulcan paid ~$260M in dividends in 2025 with buybacks that flexed from ~$69M (2024) to ~$438M (2025) as cash flow allowed. Do not expect the commodity-windfall-then-cut pattern of oil or coal.[7]
• Royalty/streaming — effectively none. There is no aggregates equivalent of a metals royalty company; FRP Holdings (FRP) is a rare, diversified public example of the land/royalty model.[17]
• ETFs — no pure play. Exposure comes through broad materials funds (e.g., the Materials Select Sector SPDR, XLB, which held Vulcan, CRH, and Martin Marietta each around 4.5-4.7% in mid-2026) or infrastructure funds (e.g., PAVE). There is no crushed-granite ETF.[22][23]

Private routes

• Direct / PE ownership. Most firms are private or PE-backed. The classic playbook is a regional roll-up — buy family quarries, professionalize pricing and maintenance, tuck into a platform, and integrate asphalt/concrete demand. A single well-located, permitted quarry is a durable cash annuity. The cardinal error is underwriting national valuation logic against an intensely local asset.[2][14]
• Mineral & royalty interests. Own the land or granite rights and lease to an operator for a per-ton or percentage royalty — the private analogue to metals royalties, offering commodity-linked, inflation-protected income, but illiquid and bilateral with no traded market. Diligence must cover permits, surface access, minimum payments, escalators, audit rights, and reclamation — not just tonnage in the ground.[17]
• The whole game in one phrase: the valuable asset is permitted, specification-quality rock inside an advantaged freight radius. Diligence the delivered-cost map market by market.

Outlook

• Near term (2025-26): demand is choppy but supported — IIJA highway dollars plus data-center, reshoring, and power construction offset softer housing and a soft overall spending backdrop. Volumes roughly flat-to-low-single-digit growth; pricing keeps rising mid-single-digits, so revenue and margin dollars grind higher even in a flat-volume year (Vulcan's own 2026 guide: +1-3% volume, +4-6% price).[4][7][8][25]
• The FY2026 funding cliff is the swing variable. A timely, adequately funded surface-transportation reauthorization extends the tailwind; a lapse is the main downside catalyst.[24]
• Structural positives: abundant geology but permit-scarce supply → durable pricing power; Sun Belt tilt; near-zero transition risk; and continued consolidation concentrating value in reserve-rich, well-located operators.

Bottom line: treat crushed granite less like a commodity-price bet and more like a cyclical, real-asset infrastructure business with local-monopoly pricing — modest volume cyclicality, structural price escalation, fat per-ton margins, very long reserves, and a scarce, permit-gated asset base. The cleanest public exposure is the large-cap aggregates equities; the highest-return private angle is owning permitted reserves in the path of growth.

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Data-honesty notes

• Crushed-granite tonnage (~210 million metric tons/yr) is a derivation (USGS's ~14% granite share × ~1.5 billion tons total crushed stone), not a directly reported figure.[4]
• USGS publishes no numerical granite reserve total — only a qualitative "adequate" characterization.[4]
• The $0.15-0.25/ton-mile freight cost and ~30-50-mile haul radius are widely cited industry rules of thumb, not a single federal statistic.
• Company per-ton figures (Vulcan, Martin Marietta) cover all aggregate types, not granite alone.[7][8]
• USGS uses metric tons; SEC filers report U.S. short tons (~10% larger); cross-source per-ton comparisons are approximate.
• Market caps in §4 are approximate mid-2026 figures from general market knowledge, not from the federal sources or the underlying research — verify before acting.
• Census 2022 figures for 212313 carry material imputation ranges and are benchmark estimates, not precision counts.[2]

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Sources

1. U.S. Census Bureau, 2022 NAICS Manual — Industry 212313 definition. https://www.census.gov/naics/reference_files_tools/2022_NAICS_Manual.pdf
2. U.S. Census Bureau, 2022 Economic Census, Sector 21, NAICS 212313 (firms, establishments, revenue, payroll, employment; concentration ratios CR4/CR8/CR20/CR50 and HHI; state tables), released 2024-25. https://data.census.gov (table q=212313)
3. U.S. Census Bureau, County Business Patterns 2023, NAICS 212313 (establishments, employment, annual and first-quarter payroll), released June 2025. https://www.census.gov/data/datasets/2023/econ/cbp/2023-cbp.html
4. U.S. Geological Survey, Mineral Commodity Summaries 2026 — Stone (Crushed) (data for 2025), Feb 2026. https://pubs.usgs.gov/periodicals/mcs2026/mcs2026.pdf
5. U.S. Geological Survey, Mineral Commodity Summaries 2025 — Stone (Crushed) (data for 2024), Jan 2025. https://pubs.usgs.gov/periodicals/mcs2025/mcs2025-stone-crushed.pdf
6. U.S. Small Business Administration, Table of Size Standards, effective March 17, 2023 (NAICS 212313 = 850 employees). https://www.sba.gov/document/support-table-size-standards
7. Vulcan Materials Company, Form 10-K for the year ended Dec. 31, 2025 and FY2024/FY2025 results (shipments, freight-adjusted price, cash cost and gross profit per ton, reserves, capex, dividends/buybacks). https://www.sec.gov/Archives/edgar/data/1396009/000162828026009546/vmc-20251231.htm
8. Martin Marietta Materials, Form 10-K for the year ended Dec. 31, 2025 and FY2024/FY2025 results (shipments, average selling price, reserves, reserve life, energy sensitivity, end-market mix). https://www.sec.gov/Archives/edgar/data/916076/000119312526059193/mlm-20251231.htm
9. CRH plc, Form 10-K for the year ended Dec. 31, 2025 (Americas aggregate volume). https://www.sec.gov/Archives/edgar/data/849395/000162828026009043/crh-20251231.htm
10. Holcim, "Holcim Completes Spin-Off of North American Business Amrize," June 23, 2025. https://www.holcim.com/media/media-releases/holcim-completes-spin-off-of-north-america-business
11. Construction Partners, Inc., Form 10-K for the year ended Sept. 30, 2025 (asphalt plants and aggregate facilities). https://www.sec.gov/Archives/edgar/data/1718227/000162828025053871/road-20250930.htm
12. Arcosa, Inc., Form 10-K for the year ended Dec. 31, 2024 (aggregate production). https://www.sec.gov/Archives/edgar/data/1739445/000173944525000026/aca-20241231.htm
13. Granite Construction Incorporated, 2024 Annual Report (aggregate production). https://www.sec.gov/Archives/edgar/data/861459/000086145925000015/final2024annualreport.htm
14. Martin Marietta Materials, 2025 Capital Markets Day Presentation (management estimate: ~67% private / ~33% public U.S. aggregate production). https://www.sec.gov/Archives/edgar/data/916076/000095015725000750/ex99-1.htm
15. Quikrete / Summit Materials, "Quikrete Completes Acquisition of Summit Materials," Feb. 2025. https://www.sec.gov/Archives/edgar/data/1621563/000095010325001807/dp224739_ex9901.htm
16. Rogers Group (largest privately owned U.S. aggregates company) and Luck Companies / Luck Stone, company descriptions, accessed 2026. https://rogersgroupinc.com/; https://www.luckcompanies.com/about-us
17. FRP Holdings, Inc., Form 10-K (aggregate mineral-royalty model). https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0000844059&type=10-K
18. Mine Safety and Health Administration, "Lowering Miners' Exposure to Respirable Crystalline Silica: Final Rule," 30 CFR Part 60, 2024 (PEL 50 µg/m³; action level 25 µg/m³; Metal/Nonmetal compliance April 8, 2026). https://www.federalregister.gov/documents/2024/04/18/2024-06920/
19. U.S. Environmental Protection Agency, "Nonmetallic Mineral Processing Plants — New Source Performance Standards" (40 CFR Part 60, Subpart OOO) and "Mineral Mining and Processing Effluent Guidelines." https://www.epa.gov/stationary-sources-air-pollution/nonmetallic-mineral-processing-new-source-performance-standards
20. Bureau of Land Management, "Mining and Minerals" (common-variety saleable minerals; Materials Act; 43 CFR Part 3600); U.S. Geological Survey, Minerals Yearbook: Stone, Crushed. https://www.blm.gov/programs/energy-and-minerals/mining-and-minerals/about
21. U.S. Code, 26 U.S.C. §613, "Percentage Depletion" (granite generally 14%; common construction uses 5%). https://www.law.cornell.edu/uscode/text/26/613
22. State Street Global Advisors, Materials Select Sector SPDR Fund (XLB), holdings as of July 16, 2026. https://www.ssga.com/us/en/intermediary/etfs/state-street-materials-select-sector-spdr-etf-xlb
23. Global X, U.S. Infrastructure Development ETF (PAVE), accessed 2026. https://www.globalxetfs.com/funds/PAVE
24. Federal Highway Administration, "Bridge Formula Program Funding, FY 2022-2026" (IIJA highway/bridge authorization through FY2026). https://www.fhwa.dot.gov/bipartisan-infrastructure-law/
25. U.S. Census Bureau, "Value of Construction Put in Place, May 2026" and "New Residential Construction, June 2026." https://www.census.gov/construction/c30/current/index.html