There are many reasons to think about the use of foundry sand andfoundries need a lot of it. In Europe, this amounts to about 8 million tons a year, most of which ends up in a landfill after being used once or twice. Foundries especially need pure quartz sand, which could be reused again and again. "We have to be much more careful and aware of the issue," says Susanna Mendez, a well-known expert from the…