Today's results come from 29 of 64 holes drilled at the zone, which is expected to contribute to the new overall resource estimate for the project targeted to be completed during the fourth quarter of 2018.
Noteworthy intercepts included 31.8 metres of 28.2% zinc in one hole and 18 metres of 26.2% zinc from another.
"The Mina Grande Centro drill program successfully confirmed the near-surface zinc mineralization that was left behind by previous mining activity and clearly showed that additional high-grade mineralization has yet to be delineated to the northeast," said Jim Walchuck, president and chief executive.
"Along with the zinc-oxide deposits at Mina Chica and Mina Grande Sur, we expect Mina Grande Centro to contribute to the overall resource estimate for the project anticipated to be completed during Q4 2018."
Mina Grande Centro is a part of the Mina Grande zone, which is one of the three zones of high-grade, near-surface zinc-oxide along a 1.4km trend
The trend has been tested by this drill program via 264 holes for 7,930 metres.
Zinc One shares closed in Toronto yesterday at C$0.14.