Samples taken from any larger quantity of any material are often analyzed to make estimates of the overall quality and quantity of the material being assessed.
This is especially true in prospecting for minerals or oil, where huge expenditures need to be made to bring out the prospected material, and this can only be justified when the quality of the sample retrieved is of the highest quality.
As the precision of any estimates made depends on the quality of samples, it is important that quality sample drilling methods are used to retrieve the samples that will be used for any assessments.
This makes it very important to recover the samples with a minimum loss of core, and where problems are encountered due to geological or technical reasons this fact must not be concealed, as, during actual operations, these same losses can occur and affect productivity.