The owner of a North Carolina quartz mine that’s a key source for high-purity quartz used in global semiconductor manufacturing said its operations sustained only minor damage in the wake of Hurricane Helene.

Two facilities that produce high-purity quartz essential in semiconductors, solar panels, and fiber-optics have been shut down.

Operations at a quartz mine in western North Carolina have been shut down for more than five days after Hurricane Helene dumped 2 feet of rain on the town of Spruce Pine, washing out roads and cutting power to an area with an industry critical to semiconductor manufacturing across the world.