Metso's Process Technology & Innovation group has developed a radio frequency identification (RFID) system that allows ore to be tracked from its source through to blasting, crushing, stockpiling and finally into the concentrator. The company's SmartTag system, which was launched in 2007, has been upgraded to extend its capabilities to tertiary crushing and beyond. This has been achieved by reducing the size of the SmartTags from a diameter of 60mm to 20mm.
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