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Expression of Interest for Company to Conduct a Scoping Study for the Trinity Rutongo Mine. Location: Rulindo Deadline: Monday, 14/09/2026 11:00 Trinity Metals Limited invites your organizations to submit an Expression of Interest (EOI) to be considered for appointment as Lead Consultant to undertake an independent Scoping Study of the Rutongo Mine (Rulindo District, Northern Province) Republic of Rwanda. Rutongo comprises six historical mining areas (Gisanze, Masoro, Nyamyumba, Gasambya, Karambo, and Mahaza) on the Rutongo anticline, mining cassiterite hosted in steeply-dipping quartz veins, with existing processing plants at Nyamyumba and Karambo. Unlike Musha, mineralisation at Rutongo is tin-only, with no material tantalum or lithium credit. Rutongos own published materials describe an already-mechanised operation with an established reserve base (in the order of 54,000 t recoverable tin); however, Trinitys working characterisation for this Study is that Rutongo remains semi-artisanal in material respects (mine development, grade control, and stockpile treatment). Reconciling these two positions, using independently verified data, is itself a required output of this Study for Rutongo (see Section 6.4.1 and 6.4.2). Given the number and scale of these areas, each of the six areas including the condition, capacity, and continued suitability of the existing Nyamyumba and Karambo plants shall first be assessed individually (own resource estimate, mine plan, and metallurgical performance where data allows) before being consolidated into a single, overall Rutongo development case that captures sequencing, shared infrastructure, and blending opportunities across areas. Trinity currently operates the Mine on a semi-artisanal basis. The purpose of the Scoping Study is to assess the technical and economic potential to develop the Mine into a formalised, mechanized operation, and to provide Trinitys Board and investors with a credible basis for further investment decisions, including whether to proceed to a Pre-Feasibility Study (PFS). Scope of Work: Stage 0 Data Review and Fatal-Flaw Assessment (Gate) Objective To review and validate the geological, survey, production, metallurgical, environmental, and cost information currently available for Rutongo Mines; to confirm what can reasonably be relied upon for the purposes of this Study and what requires independent re-verification; to confirm whether representative samples can be obtained to support Stage 1 testwork; and to identify any material fatal flaw in Mineral Resource, mining, processing, permitting, social, or infrastructure terms - before significant testwork or study expenditure is committed. Activities: compile and critically review all available geological, survey, production, metallurgical, environmental, and cost data and records for the Mine, including the 2018 AMS study to the extent it applies, and record the provenance, vintage, and reliability of each data set; inspect and report on the condition of existing workings and access (declines, shafts, haul roads, and surface infrastructure), and validate existing mine survey control and as-built records against physical conditions on site; confirm whether representative samples of current ore, development material, and legacy stockpiled/tailings material can practicably be obtained to support the Stage 1 metallurgical testwork programme; review relevant lessons learned from Trinitys Nyakabingo plant design and tailings storage facility (TSF) trade-off study (to be made available by Trinity) and identify implications for processing and tailings planning at this Mine; identify and assess material fatal-flaw risks across Mineral Resource, mining, processing, permitting/regulatory, social, and infrastructure disciplines; and prepare a data-gap register benchmarked against Scoping Study-level requirements (see Annex B), together with a costed, time-bound plan to close priority gaps before or during Stage 1 and Stage 2. Deliverables Data Review and Fatal-Flaw Assessment Report, including a clear statement of what data can reasonably be relied upon and what cannot; Data-Gap Register, ranked by criticality, with a costed and time-bound plan to close priority gaps; and Stage 0 Gate Review Memorandum with a clear recommendation (proceed to Stage 1 / proceed subject to conditions / do not proceed) and supporting rationale. Gate Criteria Trinity regards Stage 0 as the most important gate in this Study: its purpose is to protect Trinity from committing significant testwork or study expenditure against incomplete or unreliable inputs. The Consultant shall propose, for Trinitys agreement during mobilisation, gate criteria covering as a minimum: (i) no unmitigated fatal flaw has been identified at Rutongo Mines that would preclude further study expenditure; (ii) a clear, agreed, and costed plan exists to close any critical data gaps before or during Stage 1 and Stage 2; and (iii) representative sampling for Stage 1 metallurgical testwork is confirmed as achievable. These criteria, once agreed, will govern the go/no-go decision at the end of Stage 0. Trinity retains sole approval authority over this and every subsequent gate (Section 8). Stage 1 - Metallurgical Testwork and Characterisation (Gate) Objective Contingent on Rutongo Mines having satisfied its Stage 0 gate (or an agreed mitigation permitting progression), to determine, on the basis of representative sampling and laboratory/pilot-scale testwork, whether ore from Rutongo Mines (and, where relevant, legacy stockpiled or tailings material) can be economically upgraded to a saleable concentrate meeting market specification, at what recovery and grade, and by what practicable flowsheet. Activities design the metallurgical testwork programme, informed by the Stage 0 data review and by consultation with Trinitys site personnel; design and execute a representative sampling programme covering current run-of-mine ore, development ore, and legacy stockpiled/tailings material, with documented QA/QC; undertake mineralogical characterisation (liberation, association, and gangue mineralogy of cassiterite); undertake comminution characterisation (e.g. Bond work index or equivalent) sufficient for scoping-level equipment sizing; undertake beneficiation testwork appropriate to cassiterite mineralisation (typically gravity-based methods such as jigging, spirals, and shaking tables), including assessment of upgrading opportunities relative to current recovery practice; determine achievable recovery and concentrate grade against current market/offtake specification for tin (cassiterite), including conflict-free/ITSCI chain-of-custody requirements applicable in the Great Lakes region; characterise tailings for waste management planning and to assess any future retreatment potential; and prepare an order-of-magnitude assessment of the capital and operating cost implications of the recommended flowsheet, sufficient to inform the Stage 1 Gate Review. Deliverables Sampling and QA/QC Protocol (for Trinitys review prior to sample collection); Metallurgical Testwork Report, including recommended flowsheet, recovery and grade outcomes, and supporting data; and Stage 1 Gate Review Memorandum with a clear recommendation (proceed to Stage 2 / proceed subject to conditions / do not proceed) and supporting rationale. Gate Criteria Trinity does not presently have an independently validated benchmark for recovery or concentrate grade at Rutongo Mines for the purposes of this Study, given the absence of prior independent testwork. Trinitys own published materials cite an operating concentrate grade in the order of 70% tin; this figure has not been independently verified for the purposes of this Study and should be reconciled, not simply adopted, by the Consultant. The Consultant shall propose, for Trinitys agreement during mobilisation, numerical gate criteria covering as a minimum: (i) minimum acceptable recovery at a saleable concentrate grade; (ii) capital and operating cost order-of-magnitude consistent with a viable production case; and (iii) absence of a fatal environmental, geotechnical, or permitting flag arising from the testwork or associated site investigation. These criteria, once agreed, will govern the go/no-go decision at the end of Stage 1. Trinity retains sole approval authority over this gate (Section 8). Stage 2 Full Scoping Study (Contingent on Stage 1 Gate) Stage 2 shall commence only once Trinity has confirmed that Rutongo Mines has satisfied its Stage 1 gate criteria (or that an agreed mitigation permits progression), and shall address the following disciplines, each to be reported to Scoping Study-level accuracy and detail (see Annex B): Geology and Mineral Resources compile, audit, and reconcile all available historical exploration data, including the 2018 AMS study (to the extent it covers this Mine) and the Stage 0 data review, against current mine development and production records; estimate and classify Mineral Resources (Inferred, and Indicated where data quality supports it) in accordance with the JORC Code (2012), under the supervision of, and signed off by, a Competent Person; identify data gaps constraining resource confidence and recommend infill drilling or sampling required to support future Ore Reserve estimation at PFS level; this Study shall define the Mineral Resource and development potential only, and shall not purport to estimate Ore Reserves; undertake a preliminary evaluation of historical tailings, dumps, rejects, and alluvial, eluvial, and colluvial gravels within the licence area as a potential secondary source of feed, and determine whether further sampling or resource definition of these materials is warranted; and document geological and structural controls on mineralisation relevant to mine planning. estimate and classify Mineral Resou Tender Link : https://www.jobinrwanda.com/job/expression-interest-company-conduct-scoping-study-trinity-rutongo-mine
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