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Glossary of Terms

Glossary of Terms

Cautionary Note to U.S. Investors – The United States Securities and Exchange Commission limits disclosure for U.S. reporting purposes to mineral deposits that a company can economically and legally extract or produce. We use certain terms on this web site, such as "reserves", "resources", "geologic resources", "proven", "probable", "measured", "indicated", or "inferred", which may not be consistent with the reserve definitions established by the SEC. U.S. investors are urged to consider closely the disclosure in our Form 20-F, File No. 001-32468. You can review and obtain copies of these filings form the SEC’s website at http://www.sec.gov/edgar.shtml.

  • Reverse Circulation Drill

    A rotary percussion drill in which the drilling mud and cuttings return to the surface through the drill pipe.
  • Preliminary Feasibility Study

    A comprehensive study of the viability of a mineral project that has advanced to a stage where the mining method or pit configuration has been established, and which, if an effective method of mineral processing has been determined, includes a financial analysis based on reasonable assumptions of technical, engineering, operating and economic factors and the evaluation of other relevant factors which are sufficient to determine if all or part of the Mineral Resource may be classified as a Mineral Reserve.
  • Pipe

    A kimberlite deposit that is usually, but not necessarily, carrot-shaped.
  • Mineral Reserve

    The economically mineable part of a Measured Mineral Resource or Indicated Mineral Resource demonstrated by at least a Preliminary Feasibility Study. This study must include adequate information on mining, processing, metallurgical, economic and other relevant factors that demonstrated that economic extraction can be justified. A Mineral Reserve includes diluting materials and allowances for losses that may occur when material is mined.
  • Mineral Resource

    A concentration or occurrence of natural, solid, inorganic or fossilized organic material in or on the Earth’s crust in such form and quantity of such a grade or quality that it has reasonable prospects for economic extraction.
  • Large Diameter Drilling

    Drilling with a bit larger than eight inches. The aim is to collect macro diamonds for value modeling.
  • Kimberlite

    A dark-coloured rock that can contain diamonds. It contains the diamonds known to occur in the rock matrix where they originally formed (more than 100 km deep in the earth). Kimberlite was formed by volcanic eruptions deep within the Earth many millions of years ago. These liquid eruptions moved to the earth in networks of cracks or dykes and changed to solid rock as they cooled. Often kimberlites pass through regions that contain diamonds, and they carry the diamonds with them.
  • Impact Area

    Area expected to be affected by mining operations.
  • Feasibility Study

    As defined by Canadian National Instrument 43-101, means a comprehensive study of a deposit in which all geological, engineering, operating, economic and other relevant factors are considered in sufficient detail that it could reasonably serve as the basis for a final decision by a financial institution to finance the development of the deposit for mineral production.
  • Craton

    A stable, relatively immobile area of the earth’s crust that forms the nuclear mass of a continent or the central basin in an ocean.
  • Core Drilling

    Drilling with a drill bit smaller than eight inches. The aim is to delineate resources and collect micro diamonds for grade modeling.
  • Caustic Fusion

    An analytical process for diamonds by which rocks are dissolved at temperatures between 450 and 600 degrees celsius. Diamonds remain undissolved by this process and are recovered from the residue that remains.
  • Carat

    A unit of mass equal to 200 milligrams.
  • Bulk Sample

    Evaluation program of a diamondiferous kimberlite pipe in which a large amount of kimberlite (at least 100 tonnes) is recovered from a pipe.