From SciShow.

Technology has shaped our world, and in particular, semiconductor silicon chips are the magic ingredient that’s sparked a revolution. And all of the world’s flashiest tech can only exist at all because of one single mine. From your cell phone and computer to medical devices and spacecraft, all of the quartz that makes these things possible comes from to a tiny town in North Carolina called Spruce Pine.

Hosted by: Savannah Geary (They/Them)

Correction:
3:30 These figures should say that medium grade quartz contains 0.01% impurities, or 100 parts per million. We used a source that incorrectly calculated that conversion.
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Sources:
https://docs.google.com/document/d/e/2PACX-1vRwYEZOps6GiMJX08Fh7O0L16GpzL1kMVj2G5sw5Erkf_Z2aGDAzWlOsH8O8Sc4fWQCTBkmquoOYSZN/pub