Okay. The contamination was worse than they thought in October, so it took longer than the end of the year. The contaminated ore was removed and stacked for later processing (perhaps with help from Itronics?) and they built an entirely new pad. COVID slowed the process - crew sickness, Mexican government delays, etc.- but they are now in a repeatable process to produce gold.
In addition, the main difference from the PR you cited is David H. Fell & Company agreed to purchase doré from Mexus and refine and pay for it and the PR today says that Mexus will ship the activated carbon to SIPI Metals who will perform the electrowinning process, refine the gold and silver 11% more efficiently than Mexus' equipment is capable of and pay near-spot prices.
That's a major difference.
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