eivät ole harvinaisia.
"Here’s the thing: rare earth minerals aren’t really rare, it’s just that the process to extract them from useless rock is expensive and destructive to the environment. The fact is, we don’t need China for our rare earth minerals, we just choose to buy from them because they really don’t care about carving up giant swaths of their country to mine them."
Mutta ekokinnerit ja tuulirupellit tarvitsevat niitä paljon.
"China produces the vast majority of two particularly important rares, dysprosium (99 percent) and neodymium (95 percent). The motor of a Prius requires about 3 pounds of the latter."
http://www.nationalreview.com/planet-gore/296108/not-so-rare-earth-metals-greg-pollowitz
"Here’s the thing: rare earth minerals aren’t really rare, it’s just that the process to extract them from useless rock is expensive and destructive to the environment. The fact is, we don’t need China for our rare earth minerals, we just choose to buy from them because they really don’t care about carving up giant swaths of their country to mine them."
Mutta ekokinnerit ja tuulirupellit tarvitsevat niitä paljon.
"China produces the vast majority of two particularly important rares, dysprosium (99 percent) and neodymium (95 percent). The motor of a Prius requires about 3 pounds of the latter."
http://www.nationalreview.com/planet-gore/296108/not-so-rare-earth-metals-greg-pollowitz
Vastaukset 1
Vanhimmat
Joka toisen karvanoppaNissanin poppikoneiden kaiuttimissa on ihan yhtälailla neodyymia.