Dowa, Constantine form Palmer joint venture

Constantine Metal Resources Ltd. Jan. 5 reported that Dowa Metals & Mining Alaska Ltd. opted to exercise its option to become a 49 percent joint venture partner in Palmer, a copper- and zinc-rich volcanogenic massive sulfide project near Haines in Southeast Alaska.

Early in 2013, Dowa and Constantine inked a deal that provides the Tokyo-based smelting and mining company with the opportunity to ear...