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Normet’s Oyu Tolgoi BEV fleet: design and ventilation lessons for mine engineers

June 18, 2026|

Reviewed by Joe Ashwell

Normet’s Oyu Tolgoi BEV fleet: design and ventilation lessons for mine engineers

First reported on International Mining – News

30 Second Briefing

Normet’s battery-electric fleet at Rio Tinto’s Oyu Tolgoi underground copper-gold mine in Mongolia is being used at scale to prove full-cycle electrification in a deep, block-cave operation with long ramp hauls and high ambient temperatures in the South Gobi Desert. Multiple BEV platforms, including concrete sprayers, scalers and utility vehicles, are operating in extensive development and production areas, replacing comparable diesel units in demanding ground conditions. Early data on energy use, heat load and maintenance intervals is informing ventilation design, power distribution planning and future fleet selection for large underground projects.

Technical Brief

  • Normet supplies battery-electric concrete sprayers, scalers, charge-up and utility carriers tailored to Oyu Tolgoi’s layouts.

Our Take

Across our recent coverage, Normet’s battery-electric units are being deployed from AngloGold Ashanti’s Cuiabá gold mine in Brazil to Boliden’s Somincor operation in Portugal, so performance at Oyu Tolgoi in Mongolia gives operators a rare multi-continent reference set for BEV behaviour in very different underground conditions.

With Oyu Tolgoi in the South Gobi Desert, heat management and ventilation load are likely critical; successful BEV use here will strengthen the case other hot, deep operations are making that electrification can be justified on reduced ventilation and cooling demand rather than just diesel savings.

Normet’s sequence of product launches in our database (Spraymec 2100, Scamec LC 065 A and various BEV support units) suggests the company is targeting a full electric support fleet offering, which would allow large underground mines to decarbonise ‘horizontal’ services even where primary production fleets remain diesel for now.

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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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