NO GAPS
NO GUESSWORK

No Gaps
No Guesswork

Independent Metallurgical Testing • Engineering • Plant Construction & Fabrication

From exploration through construction,
we test it, design it, and build it.

RDi delivers practical technical solutions that reduce risk and create real measurable value across the mining lifecycle. We don’t just test and design – we engineer and build processing plants that work.

OUR SERVICES

THE RDi ADVANTAGE

RDi is your one-stop shop for the mining life cycle. We offer a full spectrum of services tailored to the mining lifecycle, ensuring seamless progression from concept to a built and operating plant. Our integrated approach outperforms traditional providers by delivering customized, actionable solutions. We conduct laboratory testing on ore samples from around the world, while our full-service engineering, design, and construction capabilities are focused within the United States.

Mineral Processing and Testing

Bench-scale and pilot testing for ore characterization, including flotation, leaching, and gravity separation.

Flowsheet Development and Optimization

Custom designs for improved recovery, throughput, and cost reduction in gold, copper, nickel, lithium, rare earth, battery minerals and iron ore operations.

Plant Audits and Debottlenecking

Comprehensive assessments to identify inefficiencies, recommend capital equipment additions, and boost productivity.

Engineering and Construction

End-to-end support for plant design, fabrication, construction, and commissioning, including factories of the future with advanced automation.

Waste Recycling Solutions

Innovative processes to convert tailings and waste into high-value products, such as critical minerals from legacy sites.

Consulting and Feasibility Studies

Pre-feasibility, bankable feasibility, and PEA services for resource definition and expansion.

OUR CAPABILITIES

COMPREHENSIVE TESTING AND DEVELOPMENT

Our 10,000+ square foot facility in Wheat Ridge is equipped with cutting-edge tools for comprehensive testing and development. We are always looking to expand our capabilities to better serve you. If you don’t see your needs listed here, talk to us anyway – we might already be working towards offering the services you are looking for.

  • Precious Metals Analysis: Gold, silver, platinum group metals analyzed to international standards.
  • Multi-Element Geochemistry: ICP-MS and ICP-OES analysis for exploration, grade control, and metallurgical accounting. Custom element suites for any commodity.
  • Automated Mineralogy: QEMSCAN and MLA analysis for ore characterization, liberation studies, and process optimization. Critical for complex polymetallic deposits and geometallurgical programs.
  • X-Ray Techniques: XRF for rapid elemental analysis. XRD for mineral identification and clay characterization. Essential for understanding ore variability.
  • Physical Testing: Density, porosity, and Bond Work Index. Foundation data for engineering studies.

  • Sample Preparation (Core Cutting, Jaw, Roll, and Gyratory Crushers, Hammer Mill, Screening, Pulverizer, Grinding Mills)
  • Geotechnical/Comminution (CWi, BWi, Ai, Proctor, Compacted Permeability)
  • Flotation Development: Bench-scale through pilot-scale flotation for sulfide ores, oxide ores, industrial minerals. Reagent optimization, grade-recovery curves, variability testing.
  • Gravity & Magnetic Separation: Testing and flowsheet development for minerals amenable to physical separation. Often the lowest-cost processing route.
  • Dewatering & Tailings: Thickening, filtration, and tailings characterization. Increasingly critical for permits and water management.
  • Leaching Studies: Cyanide leaching, acid leaching, alkaline leaching, pressure oxidation. Kinetics, optimization, and scale-up parameters.

  • Precious Metals – Gold, Silver: gravity, flotation, diagnostic leaching, cyanide and non-cyanide routes
  • Base Metals – Copper, Nickel, Zinc, Lead: flotation, leaching, impurity control, concentrate quality
  • Energy & Industrial Minerals – Coal, Iron Ore, Titanium, industrial minerals: beneficiation, upgrading, impurity removal
  • Critical & Battery Minerals – Rare Earth Elements, Lithium, Graphite, Manganese, Vanadium, specialty materials

Each program is designed around the orebody, project stage, and economic objectives.

MARKETS

INDUSTRY PARTNERS

RDI thrives on partnerships that foster mutual growth. We’re eager to collaborate with a diverse array of stakeholders, building ecosystems of innovation without IP concerns or institutional hurdles.

Mining Companies

Original Equipment Manufacturers

Engineering and Construction Companies

Drilling Companies

Land and Lease Companies

Cities, State, and Federal Governments

Other Labs

Financial Institutions and Investors

Recyclers