10. Firefighter Helmets, Nautical Compasses, Packaging Tubes, Hand Saws
Aired Nov 7, 200621 minTMDb
Impact-resistant shells and protective liners are assembled into firefighter helmets, magnetized components are balanced inside nautical compasses, layers of paperboard are wound into packaging tubes, and steel blades are cut, toothed and fitted with handles to make hand saws.
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