One of the two companies that manufacture high-purity quartz used for making semiconductors and other high-tech products from ...

The Western North Carolina town possesses the world’s most pure quartz, making its two mine operations essential to the ...

One of the two companies that manufacture high-purity quartz used for making semiconductors from mines in a western North ...

Sibelco Group restarted mining, processing and shipping quartz to customers and is ramping up to full capacity in North ...