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#1 by Anonymous (Nobody) at 09 Apr 2014 00:26:37 GMT
| Almost all copper is reclcyed, indeed some ~90% of all copper ever mined in the entire history of humanity is still in use.The 31%(according to Gail's big-chart-o-doom) represent the amount of copper demand that is met from reclcyed copper.Copper does no good at all sitting below the ground and since it's so easy to recycle you want to has as much of it as possible sitting above ground in transformers, water pipes, electrical wiring and so forth. Far from being a message of doom that only 31% of demand for copper is met from reclcyed material, it's a message of rising prosperity; the above ground supply of copper is exploding.It's just plain wrong to suggest that no platinum is being reclcyed. ~50% of world production of platinum is used in autocatalysts and ~25% in jewelry. Platinum in jewelry is essentially completely reclcyed, some but far from all of autocatalyst platinum gets reclcyed. A quick google revealed a 1977 book called "platinum group metals"(ISBN 0309026407) in which it is claimed that 37% of platinum demand is met by reclcyed material. I would presume that this fraction has increased since the 70's but it's clearly not zero, that's a bald faced lie. As in the case for copper, if most platinum eventually gets reclcyed(I couldn't find those numbers) it's a very good thing if the amount of platinum demand that is met from reclcyed platinum is as small as possible, because that means the supply of platinum in circulation is rapidly growing.Gail also suffers from a couple of popular doomer delusions. E.g. today it takes x amount of indium per square metre of transparent electrode to make a flat panel display and y amount of indium for solar panels, therefor you can make z amount of solar panels or flat panel displays. Reality just doesn't work that way; you can figure out ways to minimize the use of ITO in flat panels and you can figure out how to replace it with something else(graphene and carbon nanotubes are popular candidates) or you can figure out how to replace OLEDs and LCDs with another display technology(SED is a promising candidate but I'm particularly fond of superceeding the paradigm of big, power-hogging displays with retinal scanning displays the size of a pair of sunglasses).The other major delusion is the belief in perfect knowledge and characterization of a resource. In 1975 the known uranium reserves of the world was 1.5 million tonnes, in 2007 it was 5.5 million tonnes after a cumulative exploration cost of a paltry 5 billion dollar in the entire history of uranium mining(WNA numbers). It's a mistake to believe that only 5.5 million tonnes of uranium can be recovered for less than $130/kg; both technology and exploration proceed rapidly. |
#2 by Anonymous (Nobody) at 09 Apr 2014 16:00:02 GMT
| Dhev Anna!Your are most welcome Geethamma,There were sevaerl details in the copper plates but mostly on donation of land and kinds to Brahmin community. The ASI should announce officially everything. Let us expect soon.Krishnamurthy Sir! நம்ம தமிழ்த்தேனி புதுசா கண்டுபிடிச்ச (செப்புத் தகடுகள் போல)புதுத்தேதிதான் இந்த பிறந்தநாள்(:திருமலைத் திருடன் படிக்கிறீங்களா.. ரொம்ப சந்தோஷம். மறக்காம உங்கக் கருத்தைச் சொல்லுங்க..இந்த ஐ.டி.. பாஸ்வேர்ட்.. என்ன விஷயம் தெரியலே.. http://qornpho.com [url=http://qfdpmg.com]qfdpmg[/url] [link=http://mnberkp.com]mnberkp[/link] |
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