Pierre Gy‘s Approach to Model the Liberation Factor
DOI: 10.62178/sst.003.004
Abstract
Several approaches have been suggested by various authors to model the liberation factor when calculating the variance of the Fundamental Sampling Error. One of these approaches is the result of a thorough theoretical analysis and derivation authored by Dr. Pierre Gy as early as 1967.
Another approach, empirical in nature, models the liberation factor as a function of the top size of the fragments and the liberation size of the constituent of interest.
Both approaches have their respective merits. However, the empirical approach, as popular as it may be, is tampering with the theoretical integrity of Pierre Gy’s formula and may become highly misleading depending on how it is applied.
This paper emphasizes the superiority of the theoretical approach, explains the reasons why it should be the only valid approach, irrespective of some inconveniences and limitations, and finally suggests ways to eliminate the need for a liberation factor.
Published in Issue 3 · April 2025
Citing this article
Pitard, F. F. (2025). Pierre Gy‘s Approach to Model the Liberation Factor. Sampling Science & Technology, April 2025(3), 34-40. https://doi.org/10.62178/sst.003.004
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