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Forensic Investigations and Data Authentication


ODM has investigated numerous cases where mineral contamination or tampering was suspected including:


  • Gold grains added to crushed rock samples (e.g. Bre-X).

  • Gold and silver grains precipitated from solution.

  • Gold grains added to soil sample sites.

  • Windborne drill, mine and smelter dust in soil and humus samples.

  • Mine, mill, smelter and industrial waste in stream sediments.

  • Silver contamination from diamond drill bits.

  • Inter-sample contamination in mineral processing laboratories.


Our laboratory techniques are so sensitive that, on one occasion, we traced minute silver particles to a client's field geologist who wore a silver ring while collecting sediment samples.

Gold specimens viewed by the Scanning Electron Microscope

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