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    Sandvik DD423i development drill rig: drill‑and‑blast control insights for engineers

    April 7, 2026|

    Reviewed by Joe Ashwell

    First reported on International Mining – News

    30 Second Briefing

    Sandvik has launched the DD423i automated twin-boom development drill rig, built on the DD422i platform but engineered for higher drilling accuracy, automation readiness and data integration in underground hard-rock mines. The rig is designed for multi-face development with intelligent drilling controls, compatibility with Sandvik’s AutoMine and OptiMine systems, and upgraded onboard diagnostics to reduce unplanned downtime. For mine engineers, the DD423i targets tighter drill-and-blast control, improved overbreak management and more consistent advance per blast in high-cost development headings.

    Technical Brief

    • Sandvik positions DD422i as the leading development drill globally for over 10 years of operation.

    Our Take

    Sandvik features repeatedly in recent underground fleet orders in our database – from OceanaGold’s Didipio ramp‑up to Aris Mining’s Marmato expansion – suggesting the DD423i launch is timed into a market where its development rigs can be bundled with larger load‑and‑haul packages.

    The cluster of March–April 2026 items involving Sandvik and Byrnecut’s AutoMine deployments, plus a diesel‑electric haul truck trial at Gold Fields’ St Ives mine, signals that any automation or data‑ready features on the DD423i will be important for contractors and majors standardising on Sandvik digital ecosystems.

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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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