Golden Dawn Minerals Inc. announced results from 2016 underground drilling, and revised results for one surface step-out hole at its 100% owned May Mac mine. Repeat analyses on surface hole BF 16-26 indicate the original fire assay results announced in a news release dated December 12, 2016 were biased low. Additional check assays were done on a highly mineralized intercept for silver, gold and base metals by the same laboratory. Three splits from one high grade sample (M253097) were re-analyzed for Ag by Fire Assay and 4Acid digestion assay. The repeat analyses indicate the original fire assay result was biased low. For gold, replicate analyses by fire assay with gravimetric finish verify the initial reported result by FA-ICP. Check assays for lead show that for samples with > 5% Pb the 4Acid "near-total" digestion technique is not appropriate, as it shows a significantly low bias, and that an Aqua Regia digestion or Peroxide Fusion assay is required for full Pb recovery. No bias was detected in the analyses for zinc and copper. In summary, check assays returned much higher values for silver and lead. Revised values for the intercept are: Hole BF16-26: 177.47-183.54 (6.07 metres), 133.6 g/t silver, 0.54 g/t gold, 3.6% lead, 1.5% zinc. Including: 177.94-178.90 (0.96 metres), 688 g/t silver, 1.18 g/t gold, 19.0% lead, 7.0% zinc. This intercept is from a very significant 100 meter step-out hole along the north-westerly trend of the Skomac Vein system. The hole not only demonstrates the northwest strike extension, but also extends the vein to 13 meters below the #7Adit level. It indicates that mineralization similar to that historically mined from the upper levels of the mine is present down to the No. 7 level, and that the mineralization continues along strike and is open to the northwest. Further surface drill testing will test the extent of the mineralized zone. Nine underground diamond drill holes totaling 805 meters were drilled at the May Mac mine to test for mineralized zones on the Skomac vein and to test for parallel veins. All nine holes intersected the target Skomac vein indicating that the Skomac vein mineralization continues down to and below the No. 7 level. including previously released results for hole MU16-0. The widths of zones reported above for the drill holes are core lengths, which may be different from true width. There is insufficient information at this time to accurately estimate the true width of the zones. Drill Hole MU16-01, penetrating from the end of No. 7 level along the line of the tunnel, intersected the Skomac vein at 18 meters. Extending the No. 7 drift 18 meters will intersect this mineralized zone.