In an opencast mine in the north of Saudi Arabia, a Wirtgen 2500 SM surface miner equipped with a 2.5-meter wide cutting drum has been mining large phosphate deposits since 2012. In addition to the primary extraction of relatively soft phosphate ...
Production of U.S. industrial minerals is falling behind the demand for them. By Bill Langer Industrial minerals are found in nearly every man-made material, and their use tends to grow with our population and economy. Without industrial minerals, there would be no ...
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