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Found 4 results

  1. States are doing surveys to find more valuable mineral resources. - Geowizard
  2. Metal detectors operate on the concept of electromagnetism. Many people discover gold everyday using metal detectors. The concept is not new. - Geowizard
  3. In the early part of the last century, two brothers, Conrad and Marcel Schlumberger introduced a new method of prospecting. They had discovered and made a business around the concept of Resistivity. Today, Schlumberger is a multi-billion dollar oil services business with offices all over the world. - Geowizard