What STARK Resources does

STARK Resources is a privately held, specialized engineering group founded in 2014 that delivers fast-tracked, fit-for-purpose mineral processing plants on a fixed-price EPC/LSTK (Engineering, Procurement, Construction / Lump Sum Turn Key) basis to global mining clients. The company operates across the full mining lifecycle—from orebody assessment and amenability testing through plant design, fabrication, and ongoing optimization—serving junior miners needing rapid pilot-plant deployment, large-scale greenfield projects requiring modular scalability, and brownfield operators seeking process efficiency improvements. Its cross-disciplinary team of geologists, mining engineers, and process engineers is led by co-founders CEO Geoffrey Madderson, COO Jaco Prinsloo, and CTO Fabian Riedel.

The company's core technology stack centers on modular Dense Medium Separation (DMS) plants built in 20-inch and 40-inch container form factors for rapid transport, assembly, and relocation, combined with proprietary RFID tracer auditing systems that provide real-time visibility into plant performance. Its ore sorting capabilities span XRT (X-Ray Transmission) for diamond and waste rejection applications and UV-based sorting for lithium/spodumene pre-concentration, integrated into Hybrid Flowsheet Solutions that achieve greater than 65 tph per UV sorter with lithium loss to waste below 10%. Manufacturing is anchored by a 25,000 m² prefabrication facility in Centurion, South Africa, with global operations spanning Germany (HQ), UK, Belgium, Australia, and Botswana.

STARK generates revenue through project-based EPC/LSTK contracts for modular plant delivery, hardware sales of pre-fabricated processing plants, and professional services including test work, engineering studies, and ongoing optimization. Pricing is quote-based and not publicly disclosed. Notable customer engagements include the design and commissioning of XRT diamond recovery circuits at Lucara Diamond Corp's Karowe mine—credited with recovering the 1,109-carat and 813-carat Lesedi La Rona and Constellation diamonds—and a 300-day fast-track lithium plant build for Premier African Minerals' Zulu project. The company operates as an independent, privately held entity with no disclosed institutional investors.

Name

STARK Resources

Legal name

Stark Consulting GmbH

Website

https://stark-resources.com

Company type

Private

Founded year

2014

Operating status

Operating

Headcount range

51–100 employees

Short description

STARK Resources is a privately held engineering group delivering fast-tracked, modular mineral processing plants on EPC/LSTK contracts. It serves global mining clients with proprietary ore sorting (XRT/UV), containerized DMS plants, and RFID auditing systems, with primary manufacturing in Centurion, South Africa and headquarters in Wedel, Germany.

Ownership category

akta.pro rank

Product category

Mining Engineering Services

NAICS

Support Activities for Metal Mining (213114), Support Activities for Mining (213)

SIC

Mining Machinery & Equip (No Oil & Gas Field Mach & Equip) (3532)

akta.pro primary industry

Mineral Processing Plant Design & EPCM (Flowsheet Development, Piloting & Scale-up) (IMAKALAK)

akta.pro secondary industries

Project & Construction Management (EPCM, Owner’s Engineer, Scheduling/Controls) (IMAKAOAG), Mine Infrastructure & Utilities EPC (Power, Water, Comms, Camps, Roads, Airstrips) (IMAKAOAB)

Keywords

• Modular mineral processing
• Ore sorting services
• Dense medium separation
• Mining engineering EPC
• RFID process auditing

Headquarters

HQ city

Wedel

HQ country

Germany

HQ region

Europe

Offices6 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Supply Chain, Operations, Technology or R&D, Infrastructure, Marketing or Sales

Revenue model

1. EPC/LSTK Contract Services: Fixed-price Engineering, Procurement, Construction and Lump Sum Turn Key contracts for design, fabrication, pre-assembly and factory acceptance testing of modular mineral processing plants. Revenue is generated through project-based contracts with mining clients.
2. Modular Plant Manufacturing: Prefabrication and assembly of modular processing plants at their 25,000 m² facility in Centurion, South Africa. Plants are designed for specific mineral processing applications and sold as complete turnkey solutions.
3. Technology Integration Services: Integration of ore sorting technologies, RFID auditing systems, and process optimization services. Includes test work, engineering studies, and ongoing optimization services for mining operations.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels4 records

Core offering

STARK Resources is a specialized EPC/LSTK engineering group that designs, fabricates, and commissions fit-for-purpose modular mineral processing plants for mining companies. Core offerings include grade engineering studies, sensor-based ore sorting services (XRT and UV), modular containerized Dense Medium Separation (DMS) plants, and a proprietary RFID tracer auditing system for real-time plant optimization. Revenue is generated through fixed-price project contracts combined with the prefabrication of modular plants at their 25,000 m² facility in Centurion, South Africa.

Product overview

STARK Resources is a specialized engineering group offering expedited mineral processing solutions through a modular, fit-for-purpose approach. Their core offerings include Grade Engineering services, Ore Sorting technologies (XRT and UV-based), Modular DMS Plants with proprietary RFID Auditing Systems, and Engineering & Plant Build services. The company integrates these into Hybrid Flowsheet Solutions combining ore sorting and DMS for optimized recovery. They serve small-scale greenfield, large-scale greenfield, and brownfield mining operations across commodities including lithium, cobalt, nickel, copper, gold, and diamonds. Plants are pre-fabricated and tested at their 25,000 m² facility in Centurion, South Africa, then deployed globally.

Differentiator

Problem solved

Functional benefit

Products and services

• Grade Engineering Consulting and engineering studies service that assesses orebody characteristics to determine the most suitable coarse ore pre-concentration solution. Includes selective mining studies, dilution control, ore control and grade management, and SAG mill pebble studies for mining clients across the project lifecycle.
• Ore Sorting Services Sensor-based ore sorting service for mining clients combining XRT (X-Ray Transmission) and UV-based sorting technologies. Includes particle and bulk ore sorting studies, ore sorting testing, plant audits, and process and plant design for sorter selection and site implementation, targeting minerals such as spodumene, diamonds, coal, iron, and base metals.
• Modular DMS Plants Prefabricated modular Dense Medium Separation plants delivered as turnkey engineered units in 20" and 40" container form factors. Designed for easy transport, assembly, and rapid relocation between mining sites, with smart features such as optimized piping, custom density control, and FeSi makeup circuits.
• RFID DMS Auditing System Proprietary RFID tracer auditing solution for DMS plants combining tracers, detection hardware, and in-house developed software to provide real-time process control and 24/7 monitoring of plant performance. A 1% reduction in misplaced material can amount to an annual EBIT increase of up to $6 million for a 400 t/h coal operation.
• Engineering & Plant Build Full EPC/LSTK engineering service covering design, fabrication, pre-assembly, and factory acceptance testing of modular mineral processing plants and conveying systems for mining clients globally. Plants are prefabricated at STARK's 25,000 m² facility in Centurion, South Africa.
• Small-Scale Greenfield Plant Solutions Modular processing plant packages designed for junior mining companies and exploration-stage developers seeking to bring high-value extraction online rapidly while managing budget constraints. Plants are typically deployed in remote locations with limited workforce availability.
• Large-Scale Greenfield Plant Solutions Phased, modular pilot plant approach for mid-to-large mining projects in development or construction, allowing clients to install minimum necessary components initially and add further modules as projects scale. Leverages cutting-edge ore sorting and DMS integration to streamline mine establishment.
• Brownfield Optimization Services Optimization services for existing mining operations facing declining ore grades and rising production costs. Includes RFID DMS auditing, ore sorting retrofits, and process upgrades to extend mine life and maximize investment value for brownfield operators.

Named customers2 records

Segments3 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Four partnerships are on record, tiered core and minor.

• Optimum SortingcoreTechnology or Integration · 4 April 2023STARK Resources partnered with Optimum Sorting in April 2023 to push the boundaries of mineral processing. Optimum Sorting has proven expertise in optical sorting on both food and non-food products, using sophisticated camera and laser technology. The partnership leverages collective expertise in sensor-based sorting to bring innovative mineral recovery solutions to customers.
• QuivercoreChannel Partner/ Reseller/ Distributor · 16 June 2022Three-way partnership between Stark Resources, Quiver, and Mineral Technologies. Quiver is the exclusive supplier of Australia-headquartered Mineral Technologies' spiral separator equipment in Africa. This partnership provides African mine owners and operators with a novel integrated approach to achieving chemical-free fine mineral separation.
• Mineral TechnologiescoreTechnology or Integration · 16 June 2022Part of three-way partnership with Quiver and STARK. Mineral Technologies provides world-class spiral separator technology that STARK integrates into mineral processing designs for African mining operations.
• LabriteminorStrategic or Co-development Partner · 14 June 2022Business partner in the coal sector for RFID technology trials. STARK presented results of online DMS efficiencies created by utilizing RFID technology from on-site trial conducted with Labrite at the Coal Processing Society gathering.

Scale indicators6 records

Recent moves8 records

Expansion highlights6 records

Broad incumbents

• Metso: Large diversified mining and aggregates process equipment OEM with extensive comminution, classification, and separation portfolio. Overlaps with STARK in dense medium separation equipment and full processing plant supply for major mining houses.
• DRA Global: Mid-tier mining EPCM contractor with strong footprint across Africa, Australia, and the Americas. Comparable project-based services business serving the same junior-to-mid-tier mining client base that STARK targets, though broader in scope beyond just processing.
• Ausenco: Engineering and project delivery firm with significant mining and minerals processing practice. Overlaps with STARK's EPC/LSTK project execution capabilities for mineral processing plants, particularly in base and precious metals flowsheets.
• FLSmidth: Global Tier-1 mining equipment and EPC supplier covering comminution, separation, and pyrometallurgy. Competes with STARK in large-scale greenfield mineral processing plant EPC and DMS circuits, with broader product portfolio and Tier-1 customer access but typically longer lead times.

Direct peers

• Mineral Technologies: Specialist in spiral separators, magnetic separation, and fine mineral processing technologies. Already a STARK technology partner (via Quiver in Africa) but also a competitor in fine mineral recovery components of the same flowsheets STARK designs.
• TOMRA: Global leader in sensor-based ore sorting with XRT, laser, and color technologies. Directly comparable to STARK's UV and XRT ore sorting offerings and historically a source of senior technical talent for STARK. Competes head-to-head in pre-concentration flowsheet design for lithium, diamonds, and base metals.
• Comex Group: Russian-headquartered developer of XRT and XRF sensor-based sorting systems for industrial minerals and diamond recovery. Closely comparable to STARK in XRT-based primary diamond recovery — the same technology credited for Lucara's Karowe success.
• STEINERT: Established sensor-based sorting OEM with XRT, NIR, and induction sensor platforms for mining. Comparable to STARK in ore sorting studies, equipment supply, and plant integration; represents a key alternative in the same pre-concentration RFPs that STARK targets.
• Sepro Mineral Systems: Supplier of gravity concentration, dense medium, and froth separation equipment for small-to-mid scale mining operations. Closely comparable to STARK in modular, fit-for-purpose processing plant design for junior miners in gold, tin, and critical minerals.
• Optimum Sorting: Optical sorting specialist (camera and laser) with both food and non-food applications. A current STARK technology partner for mineral recovery, but also an emerging direct competitor in sensor-based sorting if it expands its own processing integration capabilities.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks7 records

Key highlights7 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles21 records

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about STARK Resources