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The results, which came from Vein 25 North - an area discovered in September 2019 - included 101.5g/t of gold and 1070g/t silver over 2.1 m, and 89.2g/t gold and 214g/t silver over 0.8 m.
"This high-grade orebody has made a significant contribution to our mineral resource inventory and we hope to extend its scale through further drilling in H2 2020," said TSG CEO Alexander Dorogov.
Analysts at London-based broker SP Angel praised the results, saying they "show potential to grow the mineral resource both along strike and at depth with the team planning another 11,600m of drilling in the area this year".
TSG put out an updated mineral resource estimate in June.
TSG's Asacha mine is located in Kamchatka in Russia's Far East.
Shares in the company have more than doubled since the equities crash mid-March. TSG shares were priced just below 94p on Tuesday morning, up from a low of 42.5p on March 18. The company's market capitalisation is £82.15 million.
