FGX Newsletter -January 2022 Dec 30, 2021 | News Releases In December, FGX conducted additional pilot-scale testing at a large mid-western surface mine, the visual results looks very good and now awaiting the results of the analysis of the products. The target was to remove as much pyretic sulfur as possible from the ROM coal along with ash. Does you ROM coal have similar problem? if so, FGX can remove a large amount of pyretic sulfur.