Once upon a time, in a country far, far away, a magician (geophysicist) appeared at court with an amazing offer. Provide me with a helicopter and a piece of the ore you seek, and I will criss-cross the country and find your mineral deposits. The military vetoed the helicopter on security grounds, but our geo-wizard was not to be put off. No problems. I will hold the lump of ore in my hand, pass it over a geological map, and pin-point drill-sites that way.
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