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
    AllGeotechnicalMiningInfrastructureMaterialsHazardsEnvironmentalSoftwarePolicy
    Projects
    Safety

    Sixty North Mon mine restart: design, safety and economics lens for engineers

    February 10, 2026|

    Reviewed by Tom Sullivan

    Sixty North Mon mine restart: design, safety and economics lens for engineers

    First reported on MINING.com

    30 Second Briefing

    Sixty North Gold Mining plans to restart the past-producing Mon gold mine in the Northwest Territories by midyear, installing a 100-tonne-per-day mill on site about 40 km from Yellowknife. CEO David Webb targets production of roughly 100 oz. gold per day from new development 17 metres beneath historical stopes in a belt that previously yielded about 15 million oz. at 16 g/t. The restart is proceeding without a formal economic study or compliant resources/reserves, with Webb opting to validate the orebody directly through mining.

    Technical Brief

    • Restart plan omits NI 43-101-compliant resources/reserves and formal economic study, increasing reliance on operational controls.
    • Webb explicitly rejects spending on technical reports, preferring to validate ore continuity via direct production.
    • New ramp will be driven beneath historical stopes, introducing interaction risks with old voids and legacy ground conditions.
    • Mining below old workings demands rigorous void detection, backfill verification and ground support re-assessment against historic designs.
    • Onsite 100 t/d mill delivery targeted for March fixes a tight commissioning window before midyear restart.
    • Project lies ~40 km from Yellowknife, so emergency response, medevac and supply chains must accommodate remote-access constraints.
    • Historical belt production of ~15 Moz at 16 g/t implies narrow, high-grade structures requiring precise drilling and blasting control.
    • Proceeding to production without conventional de-risking studies will test how regulators and insurers view safety assurance based mainly on operating practice.

    Our Take

    With a planned 100 tonnes-per-day mill and a target of 100 oz. of gold per day, Mon sits at the small, high-grade end of the gold operations spectrum in our database, which usually signals a focus on selective mining and tight cost control rather than bulk tonnage.

    Historical grades around 16 g/t gold place the Mon gold mine among the higher-grade assets in our recent gold coverage, implying that even modest throughput can generate meaningful cash flow if dilution and ground-control risks are well managed.

    Northwest Territories projects in our coverage often flag logistics and winter access as key constraints, so a restart only 40 km from Yellowknife gives Sixty North Gold Mining a relative advantage on supply, workforce access, and emergency response compared with more remote northern camps.

    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 12 hours ago

    Boliden Somincor–EDP–Greenvolt solar UPAC: integration notes for Neves‑Corvo mine engineers

    Boliden Somincor has partnered with EDP and Greenvolt to build Portugal’s largest self‑consumption solar generation unit (UPAC) near the Neves‑Corvo zinc mine at Castro Verde, supplying power directly to mine operations. The distributed solar plant will sit adjacent to one of Europe’s largest zinc orebodies, reducing grid dependence for high‑load processes such as hoisting, ventilation and paste backfill plants. For mine planners and electrical engineers, the project signals growing integration of large‑scale on‑site renewables into base‑metal underground operations in southern Europe.

    Mining
    about 16 hours ago

    Aramine AutoNav Tele loader at Reward Gold mine: design and safety notes for planners

    RCT – Powered by Epiroc’s AutoNav Tele automation has been fitted to an Aramine L350D loader to support narrow vein stoping at Vertex Minerals’ Reward Gold mine at Hill End, after the unit was commissioned through Epiroc’s Orange Service Centre in New South Wales. The compact L350D, designed for ultra-narrow headings, is now operated via tele-remote AutoNav control rather than line-of-sight, allowing tramming and loading in constrained drives. For geotechnical and mine planners, this enables extraction in thinner ore lenses while keeping operators out of unsupported ground.

    Mining
    about 17 hours ago

    Bosch Rexroth–MEDATech off‑highway electrification: integration notes for mine engineers

    Bosch Rexroth is partnering with MEDATech Engineering to deliver end‑to‑end electrification packages for off‑highway and mining mobile equipment, combining Rexroth’s mobile hydraulics, inverters and controls with MEDATech’s EV drivetrain integration capability. The collaboration targets full systems from componentry and software through to application‑specific design and build, aimed at OEMs and retrofit projects for haul trucks, loaders and other heavy units. For mine operators, this points to more standardised electric powertrain architectures and a clearer route to integrating high‑voltage drivetrains with existing hydraulic and control systems.

    Related Industries & Products

    Mining

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

    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.