Great Panther Silver Limited announced that it has completed an updated Mineral Resource Estimate in accordance with National Instrument 43-101 for the company's 100% owned Topia silver-gold- lead-zinc Mine in Durango, Mexico. Highlights of the updated MRE are as follows: Measured and Indicated Mineral Resources increased by 28% over the four-year period since the previous MRE in 2014, to 475.9 kt grading 461 g/t silver, 1.35 g/t gold, 3.87% lead and 4.06% zinc containing 14,770,000 silver equivalent ounces. Inferred Mineral Resources decreased by 3% over the same period, to 400.4 kt grading 434 g/t silver, 1.34 g/t gold, 2.86% lead, and 2.97% zinc, containing 10,720,000 Ag eq oz. Production since the MRE with effective date of November 30, 2014 totaled 221.6 kt, with average grades of 357 g/t silver, 0.67 g/t gold, 2.27% lead, and 3.03% zinc, containing 4,840,000 Ag eq oz. The geological interpretations are similar to the previously reported MRE with the exception of adjustments made due to improved geological understanding of faulting and vein splays, and further constraints on the Leapfrog geological software used to create wireframes. Vein widths were adjusted to a minimum width of 0.3 m, with the assumption of zero grade waste, for the construction of wireframes. Capping of extraordinary high analytical values was completed both for drill core and underground samples from all 52 veins. The block modelling was conducted using MicroMine 3D geological software and the Inverse Distance Cubed grade estimation method. The NSR calculation was then completed on undiluted and capped block model assays. Over the period of November 30, 2014 to July 31, 2018 a total of 221.6 kt was mined at Topia with average grades of 357 g/t silver, 0.67 g/t gold, 2.27% lead, and 3.03% zinc. Reconciliations were completed at four of the nine mining areas to see how well production from each area matched block model corresponding volumes mined and associated grades. The four areas reconciled in this MRE show reasonable agreement with production in terms of tonnes and associated grades. While most of the current MRE is derived from Company core drilling and underground sampling along mine development, certain portions of the MRE are derived from verified pre-existing underground sampling. Analysis of the underground mine samples was completed at the on-site Topia Mine laboratory, while analysis of the drill-core was independently performed at the Company's Guanajuato Mine Complex laboratory by SGS Minerals Services (ISO 17025 Certified). The Company's QA/QC program for drill-core includes the regular insertion of blanks, standards, and duplicates into the sample shipments, diligent monitoring of assay results, and necessary remedial actions. QA/QC monitoring of the Topia Mine laboratory was accomplished by the monthly shipping and re-analysis of 25-30 mine sample pulps to the GMC laboratory, and statistically comparing the two laboratories' results using correlation coefficients. The GMC laboratory used the following analytical techniques, ASS12B for silver with over-limits (300 g/t) completed by FAG323, FAA313 for gold with over-limits completed by FAG323, and lead, zinc, copper, arsenic and antimony analysis completed using atomic absorption spectroscopy. At the Topia Mine laboratory, silver, gold, lead, zinc, and iron analysis are completed using AAS. Silver (300 g/t) and gold (10 g/t) over-limits are completed by fire assay.