Reinforcing a silo with fiberglass - GIF

Reinforcing a silo with fiberglass.

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Previously:

Fabricating cement silos - GIF
Silo demolition gone wrong - GIF
Fiberglass weaving robot for propane tanks - GIF

I don't think that's a silo.

Probably chemical storage. It must be a low temp or air cured resin they run the glass cord through.

How was the silo or tank spinning?