Sarissa Resources Inc (SRSR)

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Twinning can also be used to understand the variation between different drilling campaigns - to ensure the validity of results for campaigns of different eras and / or different companies (i.e. the same type of drilling and sampling technique would be used in the later drilled borehole).

Twinning in the sense it has been commented upon in this discussion is particularly important for understanding the potential performance of coal washing: selected borehole sites will have HQ (wire line or conventional core diameter), 100mm core and 200mm in order to crush to different top sizes then obtain wash ability test results on the samples.

The general rule of thumb is a top size that is 1/4 of the core diameter. This is important as it leads to an understanding of the wash ability distribution across the float fractions in combination with top size and fines generated when crushing to that top size.

Twinning therefore can tie and validate previous work or it can be used to understand the results of different processes used in the handling and processing of a mineral.