Tungsten plays a large and indispensable role in modern high-tech industry. Up to 500,000 tons of raw tungsten ore are mined each year by Wolfram Bergbau und Hütten AG (WHB)in Felbertal, Austria, which is the largest scheelite deposit in Europe. More than 100,000 tons per year do not need to be processed and disposed as fine tailings into settling ponds with limited capacity. The XRT-sorted waste rock can instead be sold as aggregates for road construction.