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how to determine where to drill for a mining project

When analyzing the data from a single drill hole there is a limited amount of information that can be ascertained about a resource If the hole intersects for example 3 oz per ton of gold over 10 feet it is very impressive but doesn’t give any idea of the amount of total resource of gold present in the system

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    INTRODUCTION TO MINING Ciência Viva

    determine the strippingratiothe ratio of waste removed to ore recovered it may range from as high as 45 yd ton 38 m tonne for coal mines to as low as 10 yd ton 08 m tonne in metal mines Some nonmetallic mines have no overburden to remove the mineral is simply excavated at the surface

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    Drill String Design cu

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