One Mans trash is another Mans treasure "The gold concentrate is extracted by the use of sluices lined with blankets. The resulting concentrate is amalgamated with mercury. The gold is then extracted by heating the amalgam in a retort to recover the mercury. The gold is refined primarily by grinding it into powder and treating with concentrated sulphuric acid or hydrochloric acid to dissolve the ferrous gangue minerals. The gold is further refined before it is sold. It must be mentioned that the mining and treatment methods adopted by Ekom Eya are highly inadequate as they embark on selective mining and take only the high grade ore. In this regard grades in the range of 4 g/t are left untouched. The gold extraction method also leads to substantial losses to the extent that Sankofa in Prestea come to Bibiani to purchase and transport Ekom Eya’s tails for profitable CIL treatment in Prestea. Nevertheless it is not known how many tonnes of ore these small scale operators have won over the years in spite of the fact that they follow only the high grade quartz reefs grading 10g/t and above. Samples of what Ekom Eya consider as waste yielded grades between 4g/t to 7g/t, as the “waste” comprises disseminated mineralisation within sheared phyllites and altered greywackes, which are not mined nor processed by Ekom Eya." http://www.katexploration.com/Graphics/properties/Ekom%20Eya%20Gold%20Property/Ekom_%20Eya_Report_Western_Region_Bibiana_Ghana.pdf
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