Stevan White; thank you for your post.
Thinking more about it, silica, and glass fiber is part of modern concrete (probably).
And fiberglass resin hulls do contain glass.
I have been thinking about developing a small solar panel array in my backyard to test
energy generation methods. I think, the logistics of the photo-voltaic system is a bit better
than solar ray concentrating methods. Mirrors have to be focused on the target.
An electric connection puts flexibility between the capture of the energy and the using point
of that electricity. A photo-voltaic energy capture coupled with an induction oven could work.
It might require an initial investment of money and time, as anything else does.