🎉 100% FREE — No credit card

Validate drillhole data in 60 seconds

Drop in your CSV files. Get a validated, desurveyed, composite-ready dataset. Everything runs in your browser — your data never leaves your computer.

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Detect duplicate holes, missing coordinates, depth inconsistencies, and survey gaps. Get a clear error report before they bite you downstream.

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Minimum Curvature method — industry standard. Get real X/Y/Z per sample from collar + survey data.

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Export standardized composite CSV — direct input for resource estimation software (Vulcan, Datamine, Leapfrog).

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All processing happens in your browser. No server, no upload, no analytics tracking. KCMI §1.5 compliant.

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Validation report formatted for Competent Person review. ISO 27001:2022 A.13 compliant (no transmission).

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Works in Chrome, Edge, Firefox, Safari. No Python, no R, no install. Open the URL and go.

How it works

Click Launch Free Tool above — opens in a new tab.
Drag-drop your 4 CSV files (collar, survey, assay, geology) into the upload area.
Click Run Validation — review any flagged issues inline.
Click Run Desurvey — get real XYZ per sample.
Click Download Composite CSV — your validated, composited, desurveyed output.

Core is one of 3 modules. The full bundle adds geostatistics (Assay) + 3D block model estimation (Resource).