A new independent technical report from AMEC confirms the vast tonnages and economic grades in the Duluth Metals/Antofagasta Twin Metals base and precious metals project in Minnesota.
LONDON (MINEWEB) – We have always been very aware of the enormous potential of the ground held by Duluth Metals in eastern Minnesota on the edge of the old iron range which contains literally many billions of tons of complex ore grade material with significant copper, nickel, platinum group metals and gold content.
It has to be one of the world’s great mineral deposits – the major problems are permitting and finding the funding to mine it – neither necessarily an easy task nowadays, although one suspects the funding may be the easier of the two given that Duluth has brought in a base metals mining major, Antofagasta, to help it develop and mine a significant part of the resource under the Twin Metals jv (60% Duluth and 40% Antofagasta) banner.
On the permitting front there is bound to be considerable opposition to mine development there from environmentalists given it borders on the Boundary Waters recreational area. However Twin Metals reckons it can meet the environmentalists’ concerns using modern mining standards, mining the deposit underground to reduce the surface impact and use brownfield sites from old iron range operations to locate some of the key surface facilities.