Engineering, procurement and construction management (EPCM) contractors and original equipment manufacturers (OEMs) are the firms that design, build and equip mining operations worldwide. EPCM contractors provide project management, detailed engineering, procurement management and construction oversight for mine concentrators, hydrometallurgical plants and smelters. Equipment OEMs supply the haul trucks, drills, crushers, mills and flotation cells that make up the physical mining process. This directory lists the principal firms across both categories.
Alphabetical. Each entry links to the company's own mining/metals practice page.
Fluor Corporation occupies the largest single share of major-mine EPCM awards in the current cycle. In April 2025 Fluor was selected as lead EPCM partner on Barrick Mining's Reko Diq copper-gold project in Balochistan, Pakistan, targeting first production of 240,000 metric tons of copper by the end of 2028, and received final notice to proceed from Barrick in July 2025 (Fluor, Fluor Receives Final Notice to Proceed from Barrick on Reko Diq Copper Project). In January 2025, a Fluor–Hatch joint venture won the EPCM contract for BHP's Olympic Dam Smelter & Refinery Expansion in South Australia, structured in stages ahead of BHP's targeted final investment decision in the first half of 2027, aiming to lift refined copper cathode output above 500,000 tonnes annually by the early 2030s (Fluor, Fluor Joint Venture Awarded EPCM Services Contract for BHP's Olympic Dam Expansion). Fluor also secured the EPCM contract for Teck Resources' Highland Valley Copper Mine Life Extension in British Columbia, covering pit pushbacks, tailings and water-management upgrades, and plant debottlenecking on one of Canada's largest open-pit copper-molybdenum operations (Geomechanics.io, Fluor's EPCM for Highland Valley Copper MLE), and in May 2026 was awarded feasibility study services for Anglo American's Woodsmith polyhalite project in the UK (Fluor, EPCM for Mining and Metals Industries).
Hatch partners regularly with Fluor on the largest jobs (Olympic Dam, and earlier the Donlin Gold bankable feasibility study update alongside Worley and WSP), while also winning standalone critical-minerals mandates (Mining.com, Donlin Gold Bankable Feasibility Study Update Contracts). Worley has pivoted heavily into battery-supply-chain engineering: in May 2026 the firm secured work designing a 10,000-tonne-per-annum lithium hexafluorophosphate (LiPF6) plant in St. Gabriel, Louisiana for Orbia Fluor & Energy Materials, alongside a niobium-rare-earths advisory mandate in Brazil (Mines and Money, Worley Secures New Americas Critical Minerals Work). Ausenco has built a strong 2025–2026 order book around gold and copper: it won the EPCM contract for Deep Yellow's Namibian uranium mine post-FID, for Integra Resources' Delamar project detailed engineering in June 2026, and for Generation Mining's Marathon copper-palladium project in Ontario in March 2026, where the two parties advanced into a Limited Notice to Proceed phase ahead of finalizing the full EPCM contract (Business Wire, Generation Mining Awards EPCM Contract to Ausenco for the Marathon Copper-Palladium Project; PR Newswire, Integra Appoints Ausenco to Lead Detailed Engineering at Delamar).
SNC-Lavalin, historically a top-tier mining EPCM contractor (Cobre Panamá, BHP Billiton's Saskatchewan potash projects), rebranded as AtkinsRéalis and now positions its Mining & Metallurgy practice around integrated delivery partnerships, including a role as Integrated Delivery Partner in the Republic of Guinea and equity-participation structures that pair EPC delivery with project financing on a build-own-operate basis (AtkinsRéalis, Corporate Brochure). Bechtel, privately held and therefore less visible in public disclosure than its publicly listed peers, remains a major global mining contractor whose contract awards are typically disclosed by the mine owner rather than through Bechtel's own investor reporting, a structural transparency gap relative to Fluor, Worley, and Ausenco.
Mine-engineering contract values have scaled sharply with the current boom: industry market research puts average 2025 contract values for full-scope mine design and planning between $12 million and $85 million depending on scale and commodity, with large copper and lithium project engineering packages frequently exceeding that range, and total announced greenfield and brownfield capex pipelines across copper, lithium, and gold exceeding $180 billion as of early 2026 (Dataintelo, Mining Engineering Services Market Research Report). Individually, feasibility studies, environmental assessments, and detailed engineering packages for large copper projects in Chile, Peru, Ecuador, and the US routinely exceed $50 million in engineering service value alone, underscoring how much of the current capex cycle's early spending is consumed by front-end engineering rather than construction itself.
McKinsey's November 2024 analysis of 80 global mining projects — spanning open-pit and underground mines across copper, aluminum, nickel and other commodities, with budgets from $0.3 billion to more than $5.0 billion — found that cost and scheduling challenges affect 83% of recent major mining and metals projects, with capital expenditure overruns exceeding 40% and schedule delays of 20–30% even after correcting for COVID-19 disruption and foreign-exchange effects (McKinsey & Company, The Capex Crystal Ball: Beating the Odds in Mining Project Delivery). After correction for external variables, only 42% of projects had cost overruns of less than 10%, and only 54% had schedule overruns of less than 10% — meaning a majority of projects still missed both targets by a material margin even once macro noise was stripped out.
Counterintuitively, larger projects underperform more severely than smaller ones: McKinsey's data shows that for megaprojects valued at $1 billion or more, average cost overruns run at least 79% higher than initial budget estimates, and delays average 52% higher than initial timeframes — and only 8–10% of projects in this size category avoid both cost overruns and schedule delays, compared with roughly 20% of projects under $1 billion (McKinsey & Company, The Capex Crystal Ball). A separate McKinsey review spanning more than 300 billion-dollar-plus capital projects across industries (not limited to mining) found broadly consistent figures — average cost overruns of approximately 80% and schedule delays of about 50% — while economic geographer Bent Flyvbjerg's database of 16,000 projects found that only 8.5% met both cost and schedule targets, and a mere 0.5% achieved all originally promised benefits, a pattern Flyvbjerg terms the “iron law of megaprojects” (McKinsey & Company, Don't Cancel or Coddle At-Risk Capital Projects — Challenge Them).
Commodity type matters materially: 33% of copper projects in McKinsey's sample suffered real schedule delays exceeding 30%, compared with just 13% for iron projects and 12% for other metallic ores, reflecting copper deposits' greater metallurgical and geotechnical complexity (McKinsey & Company, The Capex Crystal Ball). McKinsey attributes roughly two-thirds of cost and schedule overruns to poor initial assessment — inadequate feasibility-study rigor — with the remaining one-third attributable to poor execution once construction begins. An earlier McKinsey feasibility-study analysis of more than 40 recent mining and metals projects found that only one-fifth delivered the financial returns predicted at the feasibility stage, and that over half of all projects surveyed exceeded their sanctioned budget by at least 15%, with an average overrun of 49% and one in five projects overrunning by more than 100% (McKinsey & Company, Optimizing Mining Feasibility Studies: The $100 Billion Opportunity).
BHP's Jansen potash project in Saskatchewan illustrates the megaproject pattern in real time. Jansen Stage 1 was originally approved in August 2021 at US$5.7 billion, but by BHP's fiscal 2025 results the estimate had risen to a range of US$7.0–7.4 billion (BHP, Financial Results for the Year Ended 30 June 2025). Jansen Stage 2, approved in October 2023 at US$4.9 billion, was revised in June 2026 to US$6.9 billion — a 40% increase — driven by inflationary cost escalation, design and scope changes, and lower labor productivity, pushing first production back to late fiscal 2031 and triggering a US$2.3 billion impairment charge (BHP, Update — Jansen Stage 2 Potash Project). Combined Stage 1 and Stage 2 capex, including pre-FID shaft-construction spend and the original Athabasca Potash acquisition, now totals approximately US$15.3–17.7 billion, with Natural Resources Canada separately citing a revised total nearer US$11.7 billion for the combined project as of early 2026 — a discrepancy itself illustrative of how difficult it is to pin down a single "true" megaproject cost figure across disclosure sources (Natural Resources Canada, Capital Expenditures; Geomechanics.io, BHP's $2.3B Jansen Potash Hit). Despite the overrun, BHP held its group-wide fiscal 2027 capital expenditure guidance steady at approximately US$11 billion, reflecting internal capital reallocation rather than net new spending.
Capital expenditure by the world's top 20 mining companies increased from $73.6 billion in 2024 to $79.4 billion in 2025 and is projected to reach $82.4 billion in 2026, a 3.8% year-on-year rise, with Rio Tinto and BHP each budgeting approximately $11 billion for 2026 — the two largest single-company capex allocations in the sector (Mining Technology, Top 20 Miners' CapEx to Grow by 3.8% in 2026). BHP's 2026 allocation specifically targets its Jansen Potash Stages 1 and 2, Copper South Australia, and Pilbara iron-ore projects, while both majors more than doubled 2021-era spending levels within roughly four years.
BHP's Jansen potash development remains the largest publicly disclosed capital commitment in the current cycle. Combined Stage 1 (revised to US$7.0–7.4 billion) and Stage 2 (revised to US$6.9 billion, up from US$4.9 billion) spending, plus pre-FID and pre-approval outlays, brings cumulative investment to roughly US$15.3 billion by mid-2026 disclosure, with first Stage 2 production now targeted for late fiscal 2031 (BHP, Update — Jansen Stage 2 Potash Project). Separately, BHP and Lundin Mining's joint-venture Vicuña copper project in Argentina/Chile carries a staged capex commitment of US$18.1 billion, with a first-stage sanctioning decision targeted as early as year-end 2026 (Project Delivery Assurance Services, Why EPC Contractor Selection Governance Fails After FID).
Rio Tinto's Winu copper-gold project in Western Australia illustrates a different FID financing structure: rather than fund the project entirely on balance sheet, Rio Tinto brought in Sumitomo Metal Mining (SMM) as a 30% equity partner in a December 2024 agreement, with SMM paying up to $430.4 million — $195 million upfront plus $235.4 million in deferred, milestone-contingent consideration — while Rio Tinto continues to develop and operate the project (Rio Tinto, Winu). The partnership, finalized in May 2025, represents one of the largest mining equity investments in Western Australia in recent years and reflects a broader industry trend of majors using partner equity to de-risk large-capex FIDs rather than shouldering full project cost alone (Rio Tinto — Media Releases).
BHP evaluates major FIDs against an internal Capital Allocation Framework: Jansen Stage 2's original 2023 approval was underwritten by an expected internal rate of return of 15–18% at consensus commodity prices and a payback period of approximately six years from first production, with underlying EBITDA margins projected at 65–70% (BHP, BHP Approves US$4.9 Billion Investment in Stage Two of Jansen Potash Project). This IRR-and-payback discipline is precisely why the same Capital Allocation Framework was invoked again in 2025 to justify a two-year construction extension for Stage 2 — shifting first production from FY29 to FY31 — as a sequencing decision rather than a project cancellation, illustrating how majors use staged capital-allocation reviews to absorb megaproject cost overruns without abandoning sanctioned projects outright.