Excellon Resources Inc. announced results from underground drilling at the Platosa Mine in Durango, Mexico. Highlights are: Further definition and expansion of the 623, NE-1 and NE-1S Mantos, with diamond drilling results from underground including: 1,828 g/t silver equivalent ("AgEq") over 5.2 metres (1,051 g/t Ag, 12.1% Pb, 13.1% Zn and 0.2 g/t Au) in EX21UG600; 2,368 g/t AgEq over 1.6 metres (1,647 g/t Ag, 12.3% Pb, 11.6% Zn and 0.1 g/t Au) in EX21UG597; and 1,481 g/t AgEq over 2.5 metres (784 g/t Ag, 7.7% Pb, 13.9% Zn and 0.3 g/t Au) in EX21UG601. Drilling from underground continues to define and delineate mineralization in areas ahead of production and outside of the current mine plan. Drilling from underground continues to define and expand known mineralization ahead of production at the 623, NE-1 and NE-1S Mantos. Most significantly, drilling into the 623 and NE-1 Mantos continues to improve understanding and confidence, and extend mineralization in these areas. Drilling at Platosa will continue to target areas ahead of production and test the extent of mineralization around mine workings. Platosa drill core samples are prepared and assayed by SGS Minerals Services in Durango, Mexico. The lab is accredited to ISO/IEC 17025. Assay turnarounds have been impacted recently by supply and labour shortages related to COVID-19.