Heavy Metals
- Episode aired Jun 14, 2006
- TV-PG
Some metals are so critical to the US economy the the Federal Government retains a strategic stock pile of them. This program describes how these metals are produced and what they are used f... Read allSome metals are so critical to the US economy the the Federal Government retains a strategic stock pile of them. This program describes how these metals are produced and what they are used for that make them so valuable: copper, iron, lead, nickel, uranium and zinc.Some metals are so critical to the US economy the the Federal Government retains a strategic stock pile of them. This program describes how these metals are produced and what they are used for that make them so valuable: copper, iron, lead, nickel, uranium and zinc.