3. Abandoning process of mine:
In foreign countries, each index passes different stages to reach a definite reserve.
From passing a stage to another, a process may be occurred to make a mine abandoned. The mentioned stages are as follows;
For each stage of exploration operations, which results to gain data from a mineral producing region, a definition is available. The last definition, which explains different stages, is Jorcdiagram.
In the above-mentioned diagrams, with regard to the exploration operation, minerals are divided to two main groups;
Mineral resources group: This word is used for discovered reserves and materials that the exploitation of them is uneconomic at this stage and mineral masses were not discovered there.
Mineral reserves group: This word is used for mineral masses that the existence of them is proved by excavation or other exploration methods or mineral masses that the availability of them is guessed in a particular region via high percentage are called mineral reserves.