In the 90s they had so much of this stuff and it was really expensive to store and not much could be done with it, by then they discovered it could be used to coat the glass exterior of entire skyscrapers to reduce glare, and to make solar panels, and many other things. I always think of this story when I hear about byproduct management problems, and hope they'll find a commercial solution - they just might invent something new and awesome out of necessity.