Sibelco is basically the world's only supplier of ultra-pure quartz. Their mining and processing facilities for ultra-pure quartz are located in Spruce Pine, NC, which has experienced flooding as a result of Hurricane Helene. The ultra-pure quartz they produce is used to make Czochralski crucibles, which are essential for forming large crystals of silicon.

This market resolves YES if a major semiconductor fab announces before September 30, 2025 that its production has been limited due a shortage of:
* ultra-pure quartz, OR
* Czochralski crucibles, OR
* semiconductor-grade silicon crystals,
UNLESS this shortage is very clearly not due to the effects of Hurricane Helene.

Otherwise, resolves NO. I will use my best judgement.