GoldMining Inc. announced the results of updated Mineral Resource estimates (MREs) on each of its 100% owned Titiribi Project (Titiribi) and its La Mina Project, both located in Antioquia, Colombia. Titiribi Updated Mineral Resource Highlights: Measured and Indicated Mineral Resources of 5.54 million ounces gold, and 1,061.2 million pounds of copper (434.6 million tonnes grading 0.40 g/t gold and 0.11% copper) (see Table 1); Inferred Mineral Resources of 3.15 million ounces gold and 212.6 million pounds of copper (241.9 million tonnes grading 0.40 g/t gold and 0.04% copper); Compared to the prior reported estimate completed in 2016, which was not pit-constrained: Indicated Mineral Resource tonnage has increased by 55.6%, while metal content for gold and copper has increased by 23.1% and 51.5% respectively due to changes in cut-off grade and metal price parameters; Inferred Mineral Resources tonnes have increased 16.4%, while metal content for gold and copper have increased by 3.1% and 172.9% respectively due to changes in cut-off grade and metal price parameters; The updated MRE utilizes a pit shell to constrain resources and takes into account updated operating cost assumptions and updated metal price assumptions, including USD 1,600/oz gold and USD 3.25/pound copper; and A total of 270 diamond drill holes, totaling 144,779 metres, have been drilled at Titiribi with 184 diamond drill holes, totaling 106,250 meters drilled at Cerro Vetas, NW Breccia, and Chisperos, the deposits which host the MRE. The updated MRE for Titiribi utilized a 0.30 g/t gold equivalent cut-off grade for near-surface mineralization. The MRE was pit constrained to establish reasonable prospects of economic extraction with an optimized pit shell using maximum pit slopes of 50°. Cut-off grades were established by using an assumed USD 1,600/oz gold price and copper price of USD 3.25/pound copper; average metallurgical recoveries of 83% for gold and 90% for copper; average mining costs of USD 1.60/tonne waste and, USD 1.70/tonne ore; and average processing and general and administrative costs of USD 6.80/tonne processed. Ordinary kriging was used to estimate gold and copper into blocks measuring 5 x 5 x 5 metres in dimension. Copper is included in the block models and MRE for Cerro Vetas, and although present at Chisperos and NW Breccia, it was not included in the resource estimate or cut-off grade estimations for these deposits. Titiribi hosts several gold-copper exploration targets in an historic gold mining district located in the Department of Antioquia about 70 kilometers southwest of Medellin, Colombia. Titiribi comprises a single mining concession covering an aggregate area of approximately 3,919 hectares. La Mina Updated Resource Highlights: Indicated Mineral Resources of 0.663 million ounces gold, 1.602 million ounces of silver and 150.5 million pounds of copper (28.2 million tonnes grading 0.73 g/t gold, 1.76 g/t silver and 0.24% copper); Inferred Mineral Resources of 0.287 million ounces gold, 0.772 million ounces silver and 81.2 million pounds of copper (13.6 million tonnes grading 0.65 g/t gold, 1.76 g/t silver and 0.27% copper); Compared to the prior reported estimate completed in 2016, Indicated Mineral Resource tonnage has increased by 0.3%, while metal content for gold and silver have decreased by 0.8% and 0.3% respectively and copper has increased 0.2%; Compared to the prior estimate reported in 2016, Inferred Mineral Resources tonnage has increased 9.1%, while metal content for gold, silver and copper have increased by 9.5%, 9.8%, and 9.8% respectively; The estimate has been updated with metal prices of USD 1,600/oz gold price, USD 21/oz silver, and USD 3.25/lb copper; The MRE utilizes pit shells to constrain resources at the La Cantera and Middle Zone deposits; The total La Mina Project area comprises a database of 106 drill holes totaling 36,694 metres with 80 drillholes and 27,130 metres drilled within the two deposit block models at La Cantera and Middle Zone; and The Mineral Resource estimate incorporates only La Cantera and Middle Zone prospects and does not include the La Garrucha prospect located approximately 800 m to the east. The La Mina property consists of two concession contracts and two concession contract applications covering 3,210 hectares located in the Department of Antioquia, Republic of Colombia, some 51 km SW of Medellin. The Mineral Resource for La Mina incorporates the La Cantera and Middle Zone porphyry deposits located within 400 m of each other. La Cantera and Middle Zone constitute two of the four drill-tested mineralized porphyry intrusive and breccia bodies on the La Mina property. In both deposits, the intrusive centers are characterized by a series of porphyry stocks and related breccias that together make up porphyry copper-gold deposits.