Fly ash contains rare earth elements needed for electronics

https://www.freethink.com/technology/rare-earth-elements#Echobox=1663193397

"easier extract rare earth elements from fly ash, byproduct of coal-fired power plants... mountains of fly ash from burning coal... fly ash contains rare earth elements encased in glass... standard process strong acids... flash Joule heating developed to produce graphene can be used... heats to 5,432° F in second to break glass using mild acid... extract twice as much... no environmentally detrimental mining or foreign sources for rare earth elements"