If you, read the article, you can see that while it technically can be recycled it’s low quality glass with glue. ",Regardless of how the blades are made, engineered wood is easier to recycle than fiberglass. The glass fibers in fiberglass are trapped within a thermoset resin. Recovering it can require shredding, grinding, or chemical treatments. One energy-intensive process, pyrolysis, uses heat with no oxygen to separate the glass fibers from the polymer. " Glass is cheap and barely worth recycling.