Troy Minerals (CSE:TROY,OTCQB:TROYF) is advancing its mining permit application for the Tsagaan Zalaa high-purity silica project in Mongolia, with plans for production by 2025, according to Yannis ...

Sharp sand (as opposed to rounded desert sand) is the key ingredient in concrete, while high-purity silica sand is essential for making the silicon chips that power our digital devices.