Criteria of Cubing

Classification of Laws on Sampling: A selection of the samples will be made by tracts with laws that are above the operating cost (cut off) including intermediate samples that are poorer, so the average stays above this its limits.

Dilution

For the case of Structured Tabulars (veins)
To each sample a dilution will be applied that will vary depending on the width of the sample, to the minimum width of demolishing, to the nature of the boxes and the system of exploitation. 

For the case of Mineralized Bodies
The blocks that are in contact with the rock and or other areas of marginal mineral, a dilution will be applied to them and this will be according to the method of exploitation and the sampling method.

Cases of Tabular Structure

Average Diluted Width
This is done by adding the widths that were diluted and by dividing this amount between the numbers of samples (uniform separation). In the contrary case the directly influenced area in each sample is calculated.

Cases of Mineralized Bodies
The average diluted law of mineralized bodies, will be obtained by averaging the pondered weights of the mineral blocks.

Dimension of Blocks

Tabular Structures
In order to dimension the mineral blocks we will have to keep in mind the separation in means of economic mineral, both marginal and sub-marginal, as well as the mineralogical characteristics, structural controls and litho-logical controls.

Case of one Tested Area
In the case of only one tested area the proven and probable mineral blocks on both sides will be tested.

Cases of two Tested Areas on Different Levels
It will be kept under account if there are enough geological evidences to consider with more or less certainty the continuity of mineralization between two areas on different levels.

Cases of two or more Tested Areas
In this case the geological evidences will be determining to dimension the mineralized blocks, the limits of the mineralized area are the ones that will provide configuration of the blocks.