In November 2007, Andina announced that it had completed preliminary metallurgical testwork on sulphide-bearing gold mineralization at Volcan, confirming management’s belief that this deposit was amenable to heap leaching. Gold recoveries from four column tests of the Dorado West deposit mineralization ranged from 57% to 77% with increasing recoveries directly correlated with increasing grades. The column tests, conducted at McLelland Laboratories, Inc., Nevada, were run for 64 days with recoveries showing a break out around four days and extraction generally leveling out after 26 days indicating very fast leach kenetics likely due to the high purity and small grain size of the gold.

Four 96-hour bottle roll tests, also completed by McLelland Labs on the same composite samples, returned slightly lower gold recoveries ranging from 51% to 71%. Advanced Mineral Technology Laboratories, London, Ontario, conducted 48-hour bottle roll tests on the same composite samples achieving gold recoveries ranging from 54% to 78% inline with the column test results. Both bottle roll tests showed a positive correlation between increased recoveries and increased gold grades.

Metallurgical testwork is ongoing and updated results will be reported as they come available.