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    Cosmic Boy Concentrator conversion: design and tie-in notes for project engineers

    September 1, 2026|

    Reviewed by Joe Ashwell

    Cosmic Boy Concentrator conversion: design and tie-in notes for project engineers

    First reported on International Mining – News

    30 Second Briefing

    GR Engineering Services has signed an EPC contract with Myamba Minerals, a Medallion Metals subsidiary, to redesign, procure, construct and commission the conversion of the existing Cosmic Boy Concentrator in Western Australia. The brownfield plant, originally built for nickel, will be reconfigured for Myamba’s processing requirements, allowing reuse of major infrastructure rather than building a new concentrator. For project engineers, the deal signals upcoming detailed process design, tie-ins to existing utilities and structural upgrades around the grinding, flotation and tailings handling circuits.

    Technical Brief

    • GR Engineering’s scope of work consists of the design, procurement, construction and commissioning of the works associated with the conversion of the existing Cosmic Boy Concentrator facility to a

    Our Take

    GR Engineering Services Limited appears frequently in our Mining project coverage as an EPC and EPCM contractor on brownfield plant upgrades, suggesting the Cosmic Boy Concentrator work is consistent with its strategy of targeting lower-risk, fast-track processing conversions rather than greenfield builds.

    The absence of a specified commodity in this Cosmic Boy Concentrator item fits a pattern in our 2407 tag-matched ‘Projects/Contract Award’ pieces where processing-plant awards are often framed around plant functionality rather than ore type, which can complicate benchmarking for operators comparing specialist concentrator experience.

    For Medallion Metals Limited and Myamba Minerals Pty Ltd, securing an EPC conversion contract at an existing facility typically shortens schedule and capital intensity compared with a new plant, which in turn can improve financing prospects for mid-tier developers in similar Mining stories in our database.

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    Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.

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