Nexa Resources S.A. provided the drilling and assay results from the third quarter of 2023. In third quarter of 2023, the exploration program continued to focus on the extensions of known ore bodies to the southeast of Cerro Lindo, and on the Pucasalla target, 4.5 km to the northwest of the mine, and started drilling tests at the Patahuasi Millay target, located 500 meters to the northwest of Cerro Lindo mine. There are currently five operating drill rigs.

PAR refers to pending assay results. In fourth quarter of 2023, the company will continue drilling inside the mine, at Orebody 8, drilling to the southeast and deepening, and drilling at Patahuasi Millay target., where the first drilling identified areas with the presence of sphalerite. At surface, the company will continue to drill the Pucasalla target to the southeast and the Pucasalla East target.

The brownfield exploration at Vazante aims to expand existing mineralized zones and explore new areas to define new mineralized zones near the mine. In 3Q23, 1,429 meters of exploratory drilling were completed in the Extremo Norte and Sucuri areas, and at the Vazante Sul target with two rigs, totaling 7,198 meters in 9M23. Drill holes from the near mine drilling program identified the continuity of mineralization, both at the Extremo Norte and Sucuri Norte targets, as evidenced by the results found in hole BRVZEND000058 intercepting 2.2 meters with 15.29% Zn and 0.21% Pb (Extremo Norte) and the underground hole MVZMV420P13875D25 (Sucuri) which intercepted three mineralized zones: 2.5 meters with 9.60% Zn and 0.22% Pb, 3.9 meters with 5.09% Zn and 0.16% Pb and 2.7 meters with 10.51% Zn and 0.12% Pb.