Sometimes fishing equipment is given up for dead.

Men of good will hate war, but, like it or not, wartimes produce inventions like no other periods, because it's important for your side to have better things with which to bash in heads. Fiberglass is such a product. Made from individual glass fibers, combined with polymers, fiberglass comes in a variety of forms, resists burning, and will not decay, stretch or fade. Glass fibers are either continuous fibers, such as that used in textiles and rods, or discontinuous shorter fibers, such as that used in insulation.