Rockhaven Announces Positive Metallurgical Results from its Klaza Project, Yukon https://www.globenewswire.com/news-release/2018/04/19/1481749/0/en/Rockhaven-Announces-Positive-Metallurgical-Results-from-its-Klaza-Project-Yukon.html April 19, 2018 08:30 ET | Source: Rockhaven Resources Ltd.