Mobile Heavy Diesel Mechanics at Geko Gold Mine.

Service Requirements at Geko Gold Mine

Diesel fleet reliability is the operational backbone of Geko Gold Mine's open pit oxide ore extraction and low-grade stockpile cartage cycle. With mined material trucked approximately 15 km to the Jaurdi Gold Processing Facility for treatment, any unplanned drivetrain or powertrain failure in the haul fleet directly interrupts the ore delivery chain that Beacon Minerals Limited (ASX: BCN) depends on to sustain throughput. Mobile heavy diesel mechanics engaged at this site must be configured to service open pit haulage equipment operating across unsealed internal roads in a structurally controlled, supergene-overprinted gold geology — conditions that accelerate wear on suspension, axle, and cooling system components beyond standard OEM service intervals. The RFQ scope must reflect a continuous production environment where scheduled preventive maintenance windows are narrow and unplanned breakdown response is non-negotiable. Scope documentation should specify maximum mean time to repair (MTTR) for Category 1 drivetrain failures as a minimum performance threshold.

• Ambient temperature capability: Demonstrated service delivery in sustained ambient conditions of 40°C, with documented evidence of equipment and personnel protocols tested to peak exposures of 44°C — minimum 24 months of qualifying Goldfields-Esperance site exposure within the last five years
• MTTR performance evidence: Contractors must submit documented MTTR records from a comparable open pit gold or equivalent hard-rock operation, demonstrating average Category 1 drivetrain repair completion within 8 hours of fault identification, verified by client sign-off or site KPI reports
• Fleet coverage breadth: Demonstrated capability across a minimum of three heavy equipment classes relevant to open pit haulage operations (e.g. rigid dump trucks, front-end loaders, graders), with OEM-authorised or OEM-trained technician credentials for each class submitted as part of tender response

Site-Specific Operational Constraints

Conditions procurement must communicate to all bidders in tender documentation for Geko Gold Mine.

• Environment: Goldfields-Esperance semi-arid conditions impose sustained summer ambient temperatures of 40°C and peak thermal events reaching 44°C, combined with fine calcrete and oxide dust generated by unsealed haul roads — contractors must demonstrate engine bay and hydraulic system diagnostic protocols adapted to these conditions, not generic temperate-climate procedures
• Logistics: The site sits approximately 493 km from Perth and ~55 km from Kalgoorlie, the nearest parts and personnel hub; all contractor method statements must address parts pre-positioning strategy at Kalgoorlie to eliminate single-point-of-failure dependency on Perth freight for critical components
• Response SLA: Emergency mechanical breakdown response must achieve a 2–4 hour call-out from Kalgoorlie-based standby crew for Category 1 failures; extended mobilisation for specialist technicians or major component exchange must not exceed 12–24 hours from fault notification, with KPI-linked penalty provisions embedded in contract terms
• Roster: All personnel must operate on FIFO rotational rosters transiting via Kalgoorlie-Boulder Airport (KGI); contractor method statements must include a compliant FIFO plan addressing the 493 km Perth logistics envelope, crew changeover continuity, and minimum on-site technician coverage during roster transitions
• Camp/facilities: Tender documentation must clarify site-provided versus contractor-supplied accommodation and ablution arrangements; given the remote Coolgardie district location, contractors must confirm self-sufficiency capacity for consumables, PPE, and diagnostic tooling for a minimum 14-day deployment without resupply from Perth

Contractor Capability Checklist

Minimum evaluation criteria for shortlisting Mobile Heavy Diesel Mechanics contractors at Geko Gold Mine. Each criterion must be verifiable via documentation submitted with tender response.

• Technical certifications: OEM authorisation or OEM-endorsed training records for heavy diesel equipment classes deployed at site; AS 3788 compliance for pressure equipment where applicable; MARC (Maintenance and Repair Contract) capability statement if full fleet maintenance scope is tendered
• Personnel tickets: WA Certificate of Competency (Diesel Mechanic — Heavy) or equivalent AQF III/IV trade qualification registered in WA; surface mine site induction currency; confined space and working-at-heights tickets where equipment configuration requires
• Mobilisation SLA: Documented evidence of 2–4 hour emergency call-out achievement from a Goldfields-Esperance base of operations, supported by client-verified KPI reports or site superintendent attestation from an equivalent open pit gold or base metals operation
• Public Liability insurance: Minimum AUD $20M per occurrence (Certificate of Currency required with tender response)
• Professional Indemnity: Minimum AUD $10M aggregate required where contractor scope includes technical specification of repair methodology, component substitution advice, or maintenance programme design
• Workers Compensation: Full statutory cover under WA law (WorkCover WA — Injury Management Plan required and must be submitted with prequalification documentation)
• Site exposure: Minimum 18 months continuous or cumulative exposure at a Goldfields-Esperance open pit gold or equivalent oxide-processing operation within the last five years; commodity type and extraction method must be specified in the experience schedule
• Safety systems: Documented HSE management system certified to ISO 45001 or equivalent; demonstrated ICAM (Incident Cause Analysis Method) investigation capability with at least one completed ICAM report available for audit on request

Regulatory & HSE Framework

All mobile heavy diesel mechanics engaged at Geko Gold Mine operate under the Work Health and Safety Act 2020 (WA) and the Work Health and Safety (Mines) Regulations 2022 (WA), administered by WorkSafe WA. For diesel mechanics specifically, compliance obligations extend to plant registration requirements under the WHS (Mines) Regulations 2022, management of hazardous chemicals (diesel exhaust fluid, hydraulic oils, refrigerants) under the relevant WHS codes of practice, and fatigue management obligations applicable to FIFO rosters in remote Goldfields operations. Beacon Minerals Limited (ASX: BCN) site induction and principal contractor HSE requirements must be completed by all contractor personnel before any mechanical work commences on site. Supplier portal not publicly confirmed. Verify via Beacon Minerals Limited (ASX: BCN) corporate procurement contact.

Sourcing Qualified Contractors

No active tender notices for mobile heavy diesel mechanics at Geko Gold Mine have been identified in publicly available procurement channels at the time of this briefing. The regional labour pool for heavy diesel mechanics in the Goldfields-Esperance region is centred on Kalgoorlie (~55 km from site), where active providers with open pit mining experience have been confirmed. This concentration supports the parts pre-positioning and rapid call-out SLA requirements outlined above, and procurement should weight Kalgoorlie-based operational infrastructure heavily in shortlist scoring. Given the absence of a confirmed supplier portal, initial market engagement should proceed via Beacon Minerals Limited (ASX: BCN)'s corporate procurement contact to establish prequalification pathways. Procurement teams engaging this market should allow a minimum of six to eight weeks for prequalification, insurance verification, and site induction scheduling before mobilisation can commence — particularly where FIFO roster plans require approval as part of the contractor method statement review process.