Modern Marvels: From the spear, axe, and sword to today's high tech arsenal, iron weapons have revolutionized warfare. Discover how iron ore is extracted and made into steel, how military-metallurgists create the latest weapons. Discover iron super magnets, and study the biggest iron magnet of all: the Earth! See how iron oxide plays a significant role in creating paints for cars and houses and ink for tattoos and the dollar bill.

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Documentary, History