Rockhaven Substantially Upgrades Gold and Silver Mineral Resources at its Klaza Project, Yukon 686,000 Indicated and 507,000 Inferred Gold Ounces https://www.globenewswire.com/news-release/2018/06/21/1527845/0/en/Rockhaven-Substantially-Upgrades-Gold-and-Silver-Mineral-Resources-at-its-Klaza-Project-Yukon.html June 21, 2018 08:30 ET | Source: Rockhaven Resources Ltd.