The mining newspaper for Alaska and Canada's North
The mining newspaper for Alaska and Canada's North
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Copper North Mining Corp. Jan. 21 said recent testing demonstrates that an agitated tank leach is the optimal recovery process for copper, gold and silver from oxide mineral resources at the Carmacks Copper Project in central Yukon Territory. A new process plan consists of three-stage crushing and rod mill grinding prior to placing ore in an agitated tank for leaching of copper oxides with weak sulfuric acid. Testing indicates 84 percent copper recovery with leach times of 16...
Several events have dramatically affected Alaska's mining industry in recent weeks, underscoring critical links between Alaska and the global economy. First came bad news for newly-elected Gov. Bill Walker: The plunge in world oil prices pushed Alaska's coming-year budget projections about $3.5 billion into the red. The ripple effect of this was a slashing of everything not required and one of the cuts, temporarily at least, was state funding of the Ambler District Road....
Thanks to higher grades and improved recoveries, Greens Creek and Kensington, the two producing mines located in the Alaska Panhandle, reported strong output in 2014 and outstanding results for the fourth quarter. Record output at Greens Creek At Greens Creek which is owned and operated by Idaho-based Hecla Mining Co., about 360 full-time workers carved some 7.83 million ounces of silver and 58,753 oz gold, as well as lead and zinc concentrates from the volcanogenic massive sulphide mine in 2014, milling ore at an average rat...
