Geomechanics.io

  • Free Tools
Sign UpLog In

Geomechanics.io

Geomechanics, Streamlined.

© 2026 Geomechanics.io. All rights reserved.

Geomechanics.io

CMRR-ioGEODB-ioHYDROGEO-ioQCDB-ioFree Tools & CalculatorsBlogLatest Industry News

Industries

MiningConstructionTunnelling

Company

Terms of UsePrivacy PolicyLinkedIn
    Projects
    Safety

    Steepening slopes in Pilbara iron ore mines: geotechnical levers and pit economics

    February 1, 2026|

    Reviewed by Tom Sullivan

    Steepening slopes in Pilbara iron ore mines: geotechnical levers and pit economics

    First reported on International Mining – News

    30 Second Briefing

    Rio Tinto Iron Ore is reassessing high wall designs in its Pilbara open pits after finding current slope angles are generally conservative, with most wall exposures performing to plan and showing no major instability. The work focuses on identifying specific levers for safe slope steepening, such as refined geotechnical domains, updated design acceptance criteria and tighter control of wall excavation to design. Any move to steeper inter-ramp or overall pit slopes would directly affect strip ratios, haul distances and long-term pit economics across multiple Pilbara operations.

    Technical Brief

    • Slope reassessment is being framed explicitly as a geotechnical risk management and safety optimisation exercise.
    • Rio Tinto’s work is based on detailed back-analysis of existing Pilbara wall performance and monitoring records.
    • Highwall behaviour is being compared across multiple pits to separate lithology- and structure-controlled performance differences.
    • Geotechnical domains are being refined using updated structural mapping, core logging and reconciliation of design versus as-built.
    • Acceptance criteria for slope performance are being revisited to align with observed failure modes and tolerable risk levels.
    • Tighter excavation control includes closer survey pick-up of berm widths, bench face angles and catch capacity.
    • Any steepening options are being screened against mandatory corporate geotechnical standards and site-specific trigger action response plans.

    Our Take

    In our database of iron ore coverage, Pilbara items tagged to Projects and Safety often coincide with pushback on strip ratios and haul distances, so any slope steepening by Rio Tinto Iron Ore is likely being weighed against truck hours and waste movement rather than just geotechnical factors alone.

    The recent Sanjiv Ridge Stage 2 approval by Atlas Iron in the Pilbara signals that smaller operators are also optimising pit geometries to keep up with the cost base of majors like Rio Tinto, which can make conservative slope designs commercially harder to justify over time.

    Across the 833 Mining stories in our coverage, Rio Tinto appears frequently in multi-commodity output updates rather than mine design deep-dives, so a focused piece on Pilbara open pit slope angles suggests internal design changes are material enough to warrant external technical discussion.

    Geotechnical Software for Modern Teams

    Centralise site data, logs, and lab results with GEODB-io, CMRR-io, and HYDROGEO-io.

    No credit card required.

    • Save and export unlimited calculations
    • Advanced data visualisation
    • Generate professional PDF reports
    • Cloud storage for all your projects

    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.

    Related Articles

    Mining
    about 5 hours ago

    Anglo Asian–Worley Xarxar, Garadag studies: capex and layout insights for mine planners

    Anglo Asian Mining has appointed Worley Europe Limited to deliver full feasibility studies for its Xarxar and Garadag copper-gold projects in Azerbaijan, moving both assets towards potential development decisions. Worley, part of Australia-headquartered Worley Group, will apply its global open-pit and processing-plant design capability to define mine layouts, metallurgical flowsheets and infrastructure requirements. The work is expected to firm up capital and operating cost estimates and clarify options for staged development and shared infrastructure across the two deposits.

    Mining
    about 5 hours ago

    Veracio–Bureau Veritas Latin America rollout: drill-to-model gains for mine teams

    Veracio and Bureau Veritas have signed an MoU to roll out Veracio’s advanced geological scanning technologies across Chile, Peru, Argentina and Brazil, with scope to extend into other Latin American markets. The collaboration is expected to pair Veracio’s digital core scanning and downhole sensing tools with Bureau Veritas’ regional laboratory and inspection network to speed up geological data acquisition and QA/QC. For miners, this could tighten drill-to-model cycles, improve orebody characterisation and standardise high-resolution geoscientific datasets across multiple operations.

    Mining
    about 5 hours ago

    Sandvik–Diemme Filtration deal: integrated dewatering flowsheets for mine designers

    Sandvik has agreed to acquire Italy-based Diemme Filtration, adding high-performance mining filter presses and dewatering systems as a new Filtration division within its Rock Processing business area. Diemme’s portfolio includes large automated filter presses for tailings and concentrate dewatering, targeting dry-stack tailings and reduced process water consumption in large concentrators. The move gives Sandvik an in-house solution for integrating crushing, screening and filtration flowsheets, with potential implications for tailings storage design and water balance in brownfield and greenfield plants.

    Related Industries & Products

    Mining

    Geotechnical software solutions for mining operations including CMRR analysis, hydrogeological testing, and data management.

    Tunnelling

    Specialised solutions for tunnelling projects including grout mix design, hydrogeological analysis, and quality control.

    CMRR-io

    Streamline coal mine roof stability assessments with our cloud-based CMRR software featuring automated calculations, multi-scenario analysis, and collaborative workflows.

    HYDROGEO-io

    Comprehensive hydrogeological testing platform for managing, analysing, and reporting on packer tests, lugeon values, and hydraulic conductivity assessments.

    GEODB-io

    Centralised geotechnical data management solution for storing, accessing, and analysing all your site investigation and material testing data.

    AllGeotechnicalMiningInfrastructureMaterialsHazardsEnvironmentalSoftwarePolicy