Excellon Resources Inc. announced results from underground expansion and exploration drilling at the Platosa Mine in Durango, Mexico. Further definition and expansion of the Rodilla, NE-1S and Pierna Mantos, with diamond drilling results from underground including: 1,422 g/t silver equivalent ("AgEq") over 8.9 metres (1,023 g/t Ag, 9.3% Pb, 4.5% Zn and 0.1 g/t Au) in EX20UG491, including 4,623 g/t AgEq over 2.2 metres (3,499 g/t Ag, 29.7% Pb, 10.3% Zn and 0.1 g/t Au); 1,092 g/t AgEq over 2.4 metres (673 g/t Ag, 6.7% Pb and 7.1% Zn) in EX20UG493; 1,539 g/t AgEq over 1.6 metres (1,258 g/t Ag, 7.5% Pb, 2.4% Zn and 0.1 g/t Au) in EX20UG506; and 984 g/t AgEq over 4.0 metres (721 g/t Ag, 4.1% Pb and 4.5% Zn) in EX21UG515; Drilling underway to define and discover new mineralization in an area of the Platosa deposit that was never effectively drilled from surface – the Gap Zone – with 300 metres of potential mineralized strike to be explored. Drilling from underground continues to define and expand known mineralization ahead of production at the Pierna, NE-1 and NE-1S Mantos. Most significantly, drilling into the Gap Zone, a zone of vertical mineralization inadequately tested with vertical holes drilled from surface, provides a significant opportunity to add additional mineralization along a target approximately 300 metres along strike with a vertical extent of 30-40 metres. This target will be a priority for the 2021 program and remains open to the south of the deposit, where drilling from surface at the 10-20 target has intersected mineralization beyond the current extent of the Platosa mineral footprint. Platosa drill core samples are prepared and assayed by SGS Minerals Services in Durango, Mexico. The lab is accredited to ISO/IEC 17025. The Company has a comprehensive QA/QC program, supervised by an independent Qualified Person.