Drill holes
URL: https://www.hub.geologyontario.mines.gov.on.ca/pages/drill-holes
The Ontario Drill Hole Database (ODHD) contains information for over 164,000 percussion, overburden, sonic and diamond‑drill holes. Data include location, company name, company hole number, hole orientation, hole depth, and overburden depth, if applicable. The presence of assay results with cutoff values for gold, silver, copper, zinc, lead, nickel and platinum group elements is noted. Source assessment file numbers are captured for cross referencing with the Ontario Assessment File Database (OAFD).
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Additional information
- Last updated
- June 1, 2026
- Created
- March 1, 2022
- Format
- WEB
- Licence
- King's Printer for Ontario
- Name
- Drill holes
- Type
- Data
- Language
- English
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