> jim bell:

   > That sounds like nonsense to me.

   "The sausage-shaped ingots were then shaved into thin wafers, and
   polished using a number of chemicals. After that came the process of
   printing transistors into the chips–which required degreasers and
   solvents, including the sweet-smelling trichloroethylene (TCE)"

   [1]https://gizmodo.com/the-secret-history-of-silicon-valley-and-the-tox
   ic-remn-1743622225

   [2]http://www.ozy.com/acumen/think-chinas-pollution-is-bad-try-northern
   -california/71553

   [3]http://baykeeper.org/articles/baykeepers-legal-action-clean-industri
   al-runoff-pollution

References

   Visible links
   1. https://gizmodo.com/the-secret-history-of-silicon-valley-and-the-toxic-remn-1743622225
   2. http://www.ozy.com/acumen/think-chinas-pollution-is-bad-try-northern-california/71553
   3. http://baykeeper.org/articles/baykeepers-legal-action-clean-industrial-runoff-pollution

   Hidden links:
   5. http://baykeeper.org/articles/baykeepers-legal-action-clean-industrial-runoff-pollution