Rare earth metals, base metals and precious metals: What are they and why are they important?

Описание: Welcome to the Science and Engineering Division first series on Rare earth metals, base metals and precious metals: What are they and why are they important? This is part 1 - The introduction to the series.

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Mailing address:
"The DoN"
PO Box 6864
Huntsville AL 35813-0864
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Giveaway Rules and Contest Disclaimers:
Dept of Numismatics’ Contests and Giveaways (GAWs) are held in accordance with YouTube Community Guidelines & YouTube Terms of Service which are linked below. Any GAW item was either purchased by Dept of Numismatics or given/gifted. The Dept of Numismatics is not responsible for packages lost in the mail. Any winnings are not redeemable for cash. By entering a GAW, you agree to release the Dept of Numismatics and YouTube from any and all liability related to the GAW or use/misuse of the awarded prize. The Dept of Numismatics is not responsible for any errors that occur using online tools and/or software that select the winner at random.

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