These folks are professors, consultants, scientists and other intellegentsia. They know words I've never heard of. They don't just hunt rock....they want to know exactly what it is made of. The chemical composition.
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These folks are professors, consultants, scientists and other intellegentsia. They know words I've never heard of. They don't just hunt rock....they want to know exactly what it is made of. The chemical composition. | |
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