Notes On Prospecting for Tin Ore in the Federated Malay States
Notes On Prospecting for Tin Ore in the Federated Malay States
John Brooke Scrivenor
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The drill is pushed on, but still nothing is found, and the prospector concludes that the lode has pinched out alto- gether, although what has really happened is that the drill has passed through a barren spot in a vein that would perhaps prove payable when worked. On the other hand, the drill might pass through a particularly rich spot, and bring up a core, consisting of nothing but tin-ore, which would make the lode 3ear a great deal more valuable than was really the case. e cores from the sm...all drill-holes would almost certainly prove' to be misleading as regards the value of the vein. Another thing that the prospector would be unlikely to learn from his drill would be whether the lode were faulted or not, but given an unfaulted lode and a distinct shoot of ore, I trust the above will suffice to show that a prospector operating from the surface with a diamond drill cannot expect reliable informa- tion, 19 There are some cases, however, in which a drill would prove very useful namely, in ground traversed by a number of small veins close together.
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