Fighting the fire with blacksmith furs: Listen & Download Fighting the fire with blacksmith furs .mp3 Error! Change your browser, please! ⇓ Download Wind tunnel ventilation ⚠ Suction action of air ⚠ Air flow ⚠ Helium balloon ⚠ Rope torsion ⚠ Steam ⚠ Air is let through the regulator ⚠ Air pressure ⚠ Small compressor blowing air ⚠ Balloon inflating ⚠ Air is blown through a glass tube ⚠ Fighting the fire with blacksmith furs ⚠ ★★★★★