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== Eksterne henvisninger ==
* [http://www.sciencedaily.com/releases/2004/01/040126073254.htm 2004-01-26, ScienceDaily: Microwave Steel: Faster, Cleaner, Cheaper] Citat: "...You shouldn't try it at home...He then put iron oxide and coal inside. In a matter of minutes, the microwave energy reduced the iron ore to iron, and the electric arc furnace smelted the iron and coal into steel...It's really cheap, and it's really fast..."
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