37 companies in this supply chain, sorted by market share.
World's largest gypsum company (privately held, Knauf family) after completing the $7 billion acquisition of USG Corporation on April 24, 2019 — combining the world's second and third-largest gypsum producers. Operates gypsum wallboard plants, gypsum quarries, and industrial gypsum operations across 40+ countries. In the US, operates the former USG network including major quarries. USG's new Avery Quarry (Iosco County, Michigan), targeting 550,000 t/yr in 2025, was specifically developed to offset declining FGD synthetic gypsum supply. Knauf's product range spans wallboard, plaster, ceilings, insulation, and industrial gypsum.
Supplies these inputs
Gypsum (Natural & Synthetic FGD)
Replaceability
Substitutability 55% · 4 mo to replace
Business segments
- Gypsum Wallboard & Panels55% rev
- Gypsum Plaster & Compounds18% rev
- Ceiling & Grid Systems12% rev
- Insulation10% rev
Chinese state-owned enterprise and the world's largest cement group by capacity (~530 million tonnes/year across 79 plants in China). Vertically integrated with captive limestone quarries at all integrated works; major production concentrated in Sichuan, Henan, and Anhui provinces. HK-listed subsidiary. Also the world's largest glass fiber producer, largest plasterboard manufacturer, and a major wind turbine blade maker — a single SOE controlling critical inputs for construction, clean energy, and infrastructure simultaneously.
Supplies these inputs
Limestone (Cement Grade)
Replaceability
Substitutability 25% · 120 mo to replace
Business segments
- Cement45% rev
- Glass Fiber & Composites20% rev
- New Materials (Wind & Solar)15% rev
- Plasterboard & Interior Products12% rev
North America's leading supplementary cementitious material (SCM) supplier; acquired by CRH plc for $2.1 billion in July 2025 (completed September 2025). In 2024, processed 6.2 million short tons of fresh fly ash/bottom ash and 467,806 tons of harvested legacy ash from legacy coal ash ponds, operating at 125+ sites across 42 states and serving 5,000+ customer locations. Pioneer in commercializing harvested legacy ash — Eco Material's Plant Bowen project in Georgia targets 600,000 t/yr from a 9-million-ton deposit for 15 years. The $2.1B acquisition price signals that fly ash supply control is a structural moat for global building materials companies.
Supplies these inputs
Fly Ash & Slag (SCMs)
Replaceability
Substitutability 55% · 6 mo to replace
Business segments
- Fly Ash Marketing (Fresh)60% rev
- Legacy Ash Harvesting22% rev
- SCM Blending & Distribution18% rev
One of the world's largest oil and gas companies; major US and global sulfur producer as a Claus Process refinery byproduct. Key US refining locations: Baytown, Texas (largest US refinery complex); Baton Rouge, Louisiana; Beaumont, Texas. Also major international refiner (Antwerp, Rotterdam). USGS listed as one of leading US recovered sulfur producers. Also holds 25% of Tengizchevroil (TCO) in Kazakhstan, making it indirectly a significant producer of high-sulfur crude and associated sulfur. Acquired Pioneer Natural Resources 2024 (~$60B), largest US oil deal since Exxon-Mobil merger.
Supplies these inputs
Petroleum Coke (Fuel Grade)
Replaceability
Substitutability 50% · 3 mo to replace
Business segments
- Upstream (Oil & Gas Production)40% rev
- Downstream (Refining + Fuels + Chemicals)35% rev
- Low Carbon Solutions (Lithium + CCS)15% rev
- Chemical Products (ExxonMobil Chemical)10% rev
World's second-largest cement producer by capacity (~274 Mt/yr). Record performance 2024. Divested US cement operations in 2024 (spun off as "Amrize"). Operates in 60+ countries with vertically integrated quarrying through distribution.
Supplies these inputs
Limestone (Cement Grade)
Replaceability
Substitutability 30% · 120 mo to replace
Business segments
- Cement (World #1-2)45% rev
- Ready-Mixed Concrete25% rev
- Aggregates15% rev
- Building Solutions (Roofing)15% rev
Koch Industries subsidiary; holds the highest US market share in gypsum product manufacturing per IBISWorld. Operates 12 wallboard facilities in the US; opened a new $325M facility in Sweetwater, Texas in October 2023 — its first new gypsum plant since 2004. Both mines natural gypsum and processes FGD gypsum from US coal plants. Georgia-Pacific's gypsum operations compete directly with wallboard plants for the same gypsum feedstock that cement plants need, creating direct market competition during construction booms.
Supplies these inputs
Gypsum (Natural & Synthetic FGD)
Replaceability
Substitutability 58% · 4 mo to replace
Business segments
- Gypsum Wallboard & Panels52% rev
- Paper & Tissue Products25% rev
- Building Specialties14% rev
- Gypsum Mining & FGD9% rev
India's largest power utility (NSE-listed; partly government-owned); generates the largest single-country fly ash stream outside China — over 100 million tonnes per year. India's overall fly ash generation reached 340.11 million tonnes in FY2024-25, with an unprecedented 97.8% utilization rate, up from 11.68% in 1998-99. NTPC coordinates with India's Ministry of Railways for bulk fly ash transport and participates in the National Conference on Fly Ash Utilisation. India is projected to reach 600 Mt/year fly ash generation by 2031-32 as coal capacity expands — the opposite trajectory from the declining US supply.
Supplies these inputs
Fly Ash & Slag (SCMs)
Replaceability
Substitutability 50% · 6 mo to replace
Business segments
- Coal-Fired Power Generation80% rev
- Renewable Energy12% rev
- Gas Power Generation6% rev
- Fly Ash Utilization & Subsidiary Activities2% rev
World's largest independent petroleum refiner; 15 refineries in the US (mostly Gulf Coast: Port Arthur TX, Texas City TX, Memphis TN), Canada, UK, and Ireland. Produces elemental sulfur as a mandatory Claus Process byproduct at all its refineries. Port Arthur refinery (210,000 bbl/day capacity) is one of the largest single US refiners; McKee refinery explicitly listed as producing sulfur, sulfuric acid, and LPG. USGS: ExxonMobil, Valero, ConocoPhillips, and Marathon were the leading US sulfur producers in 2018. Texas + Louisiana account for 52% of US sulfur production.
Supplies these inputs
Petroleum Coke (Fuel Grade)
Replaceability
Substitutability 50% · 3 mo to replace
Business segments
- Petroleum Refining (World #1 Independent)75% rev
- Renewable Diesel (Diamond Green Diesel JV)10% rev
- Corn Ethanol8% rev
- Chemicals + Refinery Byproducts7% rev
China's largest publicly listed cement company (~288 million tonnes/year capacity across 32 plants). Operates massive captive quarries at five major clinker bases: Tongling, Yingde, Chizhou, Fuyang, and Wuhu in Anhui Province. In June 2025, acquired a 90% stake in Huocheng County Nangang Xixin Mining Industry (limestone quarry) for ~CNY 400M ($57M) to reduce third-party supply reliance. Industry-leading cost margins driven by quarry proximity. Wuhu headquarters plant runs four 12,000-tonne/day clinker lines — among the largest kilns in the world.
Supplies these inputs
Limestone (Cement Grade)
Replaceability
Substitutability 28% · 120 mo to replace
Business segments
- Cement Production75% rev
- Limestone & Aggregates15% rev
- Waste Heat Power & Sustainability7% rev
- Other3% rev
French multinational founded 1665; world's largest flat glass and building materials company. Operates 400+ industrial sites globally; major flat glass brands include SGG (construction glass) and Sekurit (automotive glass). Also makes high-performance materials, gypsum (Gyproc/CertainTeed), and insulation.
Supplies these inputs
Gypsum (Natural & Synthetic FGD)
Replaceability
Substitutability 58% · 4 mo to replace
Business segments
- Construction Products (Glass + Drywall + Insulation)50% rev
- Mobility & Industry Glass (Sekurit Automotive)20% rev
- High-Performance Materials (Norton Abrasives + Ceramics)30% rev
Historically the largest US fly ash marketer, formed when Blackstone acquired Boral Resources' fly ash business in 2017. Distributed over 10 million tons of fly ash annually from a network of 100+ coal plant collection points at peak. Now operates in a market being reshaped by CRH's acquisition of Eco Material. Blackstone's investment thesis: fly ash supply control becomes more valuable as coal plants retire, creating a structural scarcity premium for existing collector contracts.
Supplies these inputs
Fly Ash & Slag (SCMs)
Replaceability
Substitutability 55% · 6 mo to replace
Business segments
- Fly Ash Marketing75% rev
- SCM Distribution & Blending25% rev
US refining, midstream, chemicals, and marketing company (NYSE: PSX, HQ Houston TX); spun off from ConocoPhillips in 2012. Gulf Coast facilities: Sweeny TX (247,000 bpd) and Lake Charles LA (255,000 bpd). Phillips 66 Partners LP (midstream MLP) owns pipelines and terminals feeding crude to its refineries, including the Gray Oak Pipeline (Permian Basin crude to Texas Gulf Coast) and Liberty Pipeline (Rockies crude). The Sweeny refinery includes an 835,000 bpd fractionation hub that also processes NGL from shale formations — same facility handles both crude refining and NGL processing.
Supplies these inputs
Petroleum Coke (Fuel Grade)
Replaceability
Substitutability 50% · 3 mo to replace
Business segments
- Refining55% rev
- Chemicals (CPChem — 50% joint venture with Chevron)15% rev
- Midstream20% rev
- Marketing & Specialties10% rev
China's dominant domestic gypsum wallboard producer; listed on Shenzhen Stock Exchange. Subsidiary of CNBM (China National Building Material Group). Operates gypsum board plants across China using domestic gypsum deposits and synthetic FGD gypsum from Chinese coal plants. China holds the world's largest gypsum reserves (2.1 billion MT) but is primarily a domestic consumer, not a major international exporter. BNBM is a target of US anti-dumping proceedings related to drywall products.
Supplies these inputs
Gypsum (Natural & Synthetic FGD)
Replaceability
Substitutability 55% · 4 mo to replace
Business segments
- Gypsum Wallboard70% rev
- Building Materials & Systems18% rev
- New Materials12% rev
Major US gypsum producer and wallboard manufacturer (privately held); operates 17 gypsum board plants in the US. One of six producers that collectively hold ~81% of the global wallboard market. Both mines natural gypsum and uses synthetic FGD gypsum sourced from US coal power plants. Supplies cement-grade gypsum as a byproduct of its wallboard operations to US cement mills. Headquartered in Charlotte; major operations in Texas, Alabama, New Jersey, California.
Supplies these inputs
Gypsum (Natural & Synthetic FGD)
Replaceability
Substitutability 58% · 4 mo to replace
Business segments
- Gypsum Wallboard84% rev
- Industrial Gypsum10% rev
- Natural Gypsum Mining6% rev
South Korean integrated steel producer; world #4 (37.79M MT in 2024). Pohang and Gwangyang steelworks. Produces structural steel plate (KS D 3515 equivalent to S355/S460). Supplies Korean shipbuilders, offshore structures, and heavy machinery makers. Also entering lithium and secondary battery materials as strategic pivot.
Supplies these inputs
Fly Ash & Slag (SCMs)
Replaceability
Substitutability 45% · 10 mo to replace
Business segments
- Steel (Flat Products)40% rev
- Steel (Plate & Structural)30% rev
- Stainless Steel15% rev
- Secondary Battery Materials10% rev
World's #2 steel producer; operates 3 US coke plants (as part of integrated steel mills in Indiana) that produce coal tar as a mandatory byproduct of the coking process. Coal tar is the raw material for creosote (railroad tie preservative). ArcelorMittal entered long-term coal tar supply agreements with Koppers Holdings through 2026. While ArcelorMittal does not make railroad ties, it is a critical upstream input supplier for the creosote that treats them. The 3 ArcelorMittal coke plants at Indiana Harbor (East Chicago IN), Burns Harbor (Portage IN), and Cleveland OH are primary US coal tar sources for the railroad industry.
Supplies these inputs
Fly Ash & Slag (SCMs)
Replaceability
Substitutability 45% · 12 mo to replace
Business segments
- Flat Steel (Coated, HRC, CRC)40% rev
- Long Products (Rail, Sections, Wire Rod)25% rev
- Tubular Products10% rev
- Mining (Iron Ore & Coal)15% rev
Major integrated oil company; operates Whiting IN (435,000 bpd, largest US Midwest refinery); significant fuel-grade petcoke producer from coking units processing heavy Canadian oil sands crude.
Supplies these inputs
Petroleum Coke (Fuel Grade)
Replaceability
Substitutability 50% · 3 mo to replace
Business segments
- Oil & Gas Upstream35% rev
- Refining & Fuels30% rev
- Chemicals (Aromatics & Acetyls)10% rev
- Renewables & Low Carbon15% rev
Global cement company (~100 Mt/yr capacity); one of the largest US cement importers from Mexico. Headquarters affected by 25% US tariffs on Mexican cement (April 2025); major US market presence through domestic plants and imports.
Supplies these inputs
Limestone (Cement Grade)
Business segments
- Cement (~100 Mt/yr)55% rev
- Ready-Mix Concrete25% rev
- Aggregates + Urban Solutions15% rev
- Waste Co-Processing5% rev
