Followup regarding fiber optics... was reading link in pek forum that said that REE oxide "eribium" is used in fiber optics
"Jesse November 3, 2010 at 9:15 am
Seredin qualifies Erbium as critical, yet few companies ever discuss the potential of Erbium in the future. Can you elaborate on this Gareth?
Very interesting paper by a highly qualified man. Thanks for posting!"
"Jesse: As I understand it, erbium is used in components for fiber optics and digital communications, as well as in some types of lasers."
http://www.techmetalsresearch.com/2010/11/review-of-a-proposed-new-method-for-evaluating-rare-earth-deposits/
Is this sort of thing making PSH obselete?
glass fibre, page-4
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