Ore Reserves are sub-divided, in order of decreasing confidence, into Proved Ore
Reserves and Probable Ore Reserves.
Measured Mineral Resources within the design convert to Proved Ore
Reserves and Indicated Mineral Resources within the design convert to Probable Ore Reserves, after consideration of all mining, metallurgical, social, environmental, statutory and financial aspects of the project.
Reserve has a lower level of confidence than a Proved Ore
Reserve but is
Inferred Resources" and "Probable and Proved Ore
Reserves" have a great amount of uncertainty as to their economic and legal feasibility.