EXPRESSION OF INTEREST FOR CONDUCTING A TRADEOFF STUDY FOR A TAILINGS STORAGE FACILITY FOR THE NYAKABINGO PROCESSING PLANT

Trinity Metals -Nyakabingo Mine, is seeking for a qualified and local Rwandan service provider to to conduct a tradeoff study for a Tailings Storage Facility for the Nyakabingo processing plant.

Scope of Work for tradeoff study for a Tailings Storage Facility:

• Project initiation
• Scoping of work to review solutions for the design of the TSF.
• When finalising the appointment there will be discussion to agree to the conditions of contract applicable. 
• An online kick-off meeting will be held after appointment. 
• Consultant will be responsible to collect and review all available information, including processing of survey information. 
• Provide a high-level project schedule.
• Site visit
• Meet Trinity Metals personnel involved in the project.
• Site inspection of the potential TSF sites and surrounding area.
• Assessment of deposition methods
• Literature review of up to 4 available tailings deposition methods which are feasible for the site.
• Design criteria

Once the preferred tailings deposition methodology has been selected, the consultant must compile a design criteria document for the conceptual layout(s) of the possible TSF configuration on the earmarked site. The design criteria need to be reviewed and approved by the mine before conceptual designs can commence. The design criteria need to include the following as a minimum: 

• LoM tailings tonnages. 
• Dry density of the tailings to be stored. 
• Outer wall slopes. 
• Lining requirements. 
• Limitations on borrowing construction materials outside the TSF footprint. 
• Clean water management requirements. 
• Affected water management requirements. 
• GISTM 
• Conceptual design

Provide allowance in the conceptual TSF layout

• Footprint and geometry, including typial section through walls.
• Conceptual strategy for the management of water on and from the facility.
• Conceptual stormwater management details around the perimeter of the TSF.
• Multi criteria decision matrix and workshop

The conceptual layouts need to be presented to a multi-disciplinary audience (internal and external parties as guided by the client) in the form of a one-day workshop. The various options need to be ranked in terms of technical, CAPEX, OPEX, environmental and social aspects. 

A selection spreadsheet known as a Multi Criteria Decision Matrix need to be developed and circulated to the workshop forum prior to the meeting, for review and input on various aspects and their perceived weightings and scoring of each aspect for the configurations.

• Reporting
• A report needs to be compiled summarizing the assessment of the different deposition methodologies, the conceptual layouts that were developed and the process and outcome of the final Multi-Criteria Decision Matrix workshop.
• Project administration and management
• Regular meeting to discuss progress of project. To be set by the contractor.

Eligibility and Competency Requirements:

Interested parties must have;

• Engineering of Record (EoR) Capabilities: Access to accredited experts who act as the designated Engineer of Record. 
• Geotechnical & Hydrological Expertise: Deep knowledge of valley-fill TSF construction, specifically in the steep, high-rainfall terrain of Northern Rwanda. The team should include specialized geotechnical engineers with proven experience in analyzing tailings shear strength and embankment stability.
• Regulatory & Environmental Compliance: Proven track record of evaluating and permitting tailings storage alternatives, incorporating ESG considerations and closure planning. 
• Mineral Processing Alignment: Understanding of the mine's extraction and planned processing expansions (to increase recovery up to 75%) to ensure tailings deposition aligns with milling throughput.
• Regional Track Record: Prior experience navigating mining infrastructure requirements within the East African context, or comparable mountainous, tropical environments.

All interested parties should submit an Expression of Interest in accordance with the below requirements complete with supporting documents.

• Application Cover Letter introducing your Company/Individual expressing interest, availability, and a brief business and experience profile including qualifications and experience.
• CVs of proposed personnel demonstrating skills and status.
• Key personnel CVs for conducting the required technical work
• Summary of qualifications and relevant experience.
• Details of at least three similar projects undertaken in the last five years.
• Certificate of domestic company registration issued by RDB.
• VAT Registration.
• Valid income tax clearance issued by RRA

Submission to be forwarded to tender@trinity-metals.com by not later than 17th June 2026 at 11:00AM Local time. Expressions of Interest received after 17th June 2026 at 11:00AM Local time will unfortunately not be considered.

Further discussion will be undertaken with selected respondents to prove the competence of the bidder and thereafter an invitation to tender will be provided to the bidder.