Orosur Mining Inc. announced an update on the progress of Minera Anzá's drilling campaign currently underway at the Company's Anzá project in Colombia. Diamond drill holes MAP-073, 074, 075 and 076 were completed during December 2020 and January 2021, with the holes positioned largely to address geological questions that were left unanswered from older drilling campaigns by previous companies. Over 18,000m was drilled by Waymar Resources prior to it becoming part of Orosur in late 2014. Subsequent work by Orosur determined that much of this older drilling was oriented down dip, and while these holes often returned superficially attractive assay results, they did not provide sufficiently reliable geological information to fully understand the nature of the mineralisation and to allow accurate targeting and efficient expansion drilling. As a result, much of the Company's initial 2,300m drill program currently underway, was designed to answer several outstanding orientation and structural questions and to provide insight into the style of mineralisation, with a focus on the potential for a hybrid polymetallic VMS/Epithermal model. Both holes were drilled to assist in resolving a geological interpretation issue in the south of the APTA zone, that had resulted from earlier holes having been drilled toward the east or having stopped short of the mineralised zones. Both holes were successful in resolving the questions posed, and both returned substantial intersections of high-grade gold and moderate zinc as reported. MAP-074 was drilled up dip of a group of previous holes that had defined a complex zone of gold mineralisation. Mineralisation in MAP-074 was thinner than expected, and lower gold grade, but like hole MAP-075 showed enhanced zinc grades. Further work will be done, however drilling further up dip with hole MAP-078 visually shows a thinner breccia package and might suggest the breccia zone is pinching out in this direction. This information is important for gaining a greater understanding the orientation and zonation of the orebody and is essential for targeting. Hole MAP-075 was drilled some 90m down dip of the previously announced MAP-072. Visually, the mineralisation within the breccia zone intersected in MAP-075 was similar to that intersected in MAP-072, however assay results would suggest MAP-075 has intersected a different mineralogical domain, transitioning from a domain that was gold dominant with secondary zinc, to one that is zinc dominant with secondary gold. Zinc mineralisation in hole MAP-075 is at times massive, with grades in excess of 30% over small intervals. Both MAP-072 and MAP-075 also contain minor copper, roughly correlated with zinc, with grades at times as high as 0.8% Cu. Such zonation is expected and is an integral characteristic of Volcanogenic Massive Sulphide (VMS) deposits. However, given the orientation problems of previous drilling, this was the first hole to show this zonation so unequivocally and so provide tangible guidance for further targeting. Hole MAP-077 has been completed and was located an additional 90m down dip of MAP-075 and has visually demonstrated similar intersections of massive sulphide and pervasive silicification. All samples from MAP-077 have been submitted for assay and once returned, will provide additional guidance that should assist in further developing an understanding of the zonation within the VMS system.