The Economic Times

In 1932, Dale Kleist tried to spray molten glass onto building blocks; the failed experiment created tiny fibres and helped make fibreglass insulation affordable

In 1932, Dale Kleist, while researching the process of sealing glass blocks, inadvertently discovered the art of producing fine glass fibers. This breakthrough was pivotal in the creation of fibreglass insulation, which revolutionized manufacturing. Teaming up with Jack Thomas and Games Slayter, they refined the glass fiber production technique, ultimately leading to the establishment of Owens-Corning Fiberglas Corporation in 1938.