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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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