Viscount undertook a drilling campaign at the property in Custer county towards the end of 2017.
It has reported results from seven of the ten holes, and today's assays come from the remaining three.
The main aim of the work was to verify historical drill results for a current mineral resource on one of the deposits on the project called Kate.
Hole P17005 saw assays, which included 279.6 g/t (grams per ton) of silver over 15 metres (m). That included an intersection of 714 g/t over 3 m.
Drill hole P17008 hosted 39 g/t over 6 m, while hole P17009 boated 60.5 g/t over 6 m from 11 m to 17 m.
"Additional geologic sampling will most likely enlarge the areas that will be targeted for additional drilling and further increase the resource opportunity," said Harald Hoegberg, the geologist and supervisor of the 2017 drill program.
"The drilling in 2016 and 2017 was in rhyolite units which on a visual basis appear to be separate and are part of the Silver Cliff caldera complex.
"Both volcanic units are thought to be of Miocene age. The 2016 drilling was done in a white to cream colored unit and the 2017 drilling in what is thought to be a slightly older unit that is also flow banded but highly fractured with pervasive black manganese staining and yellow to red iron staining. The latter hosted profitable silver mining in the 1880's."
READ: Could Viscount Mining have more than 50mln ounces of silver underfoot at its Silver Cliff project?
Earlier this month, Viscount revealed it had expanded the Silver Cliff project by inking a deal to lease an additional 267.98 acres of patented claims in the Hardscrabble district, including the highly prospective Diamond Lode claim.
The completion of the lease increases the size of the Silver Cliff land package to 2,296.98 acres.
“The acquisition of this claim block is likely to contribute to the expansion of the Kate deposit. These other claims will greatly aid in the development of additional targets,” said Viscount director and geologist Mark Abrams.
Viscount Mining shares on Friday closed in Toronto at C$0.34.