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dubdub - I hope you reach the pot of gold with your mental matters glacial - read on....
One of the principal methods of finding ore bodies in Canada (and elsewhere I presume) is by drilling into the "boulder trains" left by glaciers and subsequently buried by sediments. The trains are located by various geophysical means such as gravity, magnetic or radiometric surveys and drilled into. If the glacier originated or passed through a mineral rich area, the chunks of rock torn off and transported down flow will contain anomalous traces of the mineral the company is seeking. Follow the anomalies up flow until they stop and you're standing on top of an ore body!!
Sort of like Hansel and Gretel's bread crumb path.
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