GeoClerk Launches Drill Log Digitisation Service to Unlock Historical Exploration Data

GeoClerk has launched its new Drill Log Digitisation service, helping exploration and mining companies recover valuable geological information from historical reports, scanned PDFs and legacy document archives.

Across the mining industry, vast amounts of drilling data remain locked within historical reports, scanned as tables, handwritten, missing coordinates or other fields and inaccessible to modern interpretation workflows. GeoClerk’s Drill Log Digitisation service transforms these archives into structured, searchable and analysis-ready datasets, including collar locations, surveys, lithology and assay data. Every recovered value remains linked back to its original source document, ensuring complete transparency and traceability.

“Many companies are sitting on decades of drilling results without being able to realise its full value,” said Tim Hall-Johnston, Head of Product and Technology at GeoClerk. “Historical drill logs often contain geological insights that are difficult to access, impossible to search and rarely incorporated into modern databases. Our Drill Log Digitisation service helps geologists recover that information and put it back to work.”

The service has already delivered strong results. In a project across the Stuart Shelf in South Australia, GeoClerk reviewed more than 40,000 pages of historical reports, recovering over 7,300 drillhole records and extracting more than 159,000 assay records. The work also uncovered geochemical information that was not available through existing public datasets (after an extensive manual review completed by GSSA & SA DEM), highlighting the significant value that can remain hidden within historical archives.

Designed for project reviews, acquisitions, brownfields exploration and data improvement initiatives, Drill Log Digitisation enables companies to unlock the value of historical exploration investment and turn legacy reports into a strategic exploration asset.