Ann: Thickest Yet Copper Intercept at Emmie Bluff Deeps, page-4

  1. 948 Posts.
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    The problem is extracting the minerals which are 900m underground and if 100m thickness, then extracting that will require columns/supporting walls of mineral material to be left to support the ground above. Unsure whether long-wall mining will work.
    Great quantities and high grades, but will require some ingenous mining skills, which COD doesn't have at present.
    Probably will form a joint venture with a miner with the requiste skills to extract the minerals economically. Can't see an open pit mine being economical as one will have to excavate 90m3 of overburden for every 10m3 of minerals. Then getting them up 900m vertically to the surface will be another challenge.
 
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