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At 07:29 PM 9/1/2006 -0400, David Biddle wrote: >I have to agree with you, but by extension then, >you are saying that mining is absurd as >well...which, by the numbers I?ve been reading >of late, I agree with as wellexcept that we >need all that stuff to make this glorious world. > >db Well, I really meant: to throw everything into a pile with layers of dirt and then "mine" it later when its all gummed up together seems far less reasonable than to sort it, or not commingle it in the first place.... (ie, you can use an eddy current gizmo to kick the aluminum off a belt stream of mixed recyclables, if you want to go that way, but to pick them out of landfill diggings--you'd have to screen, and rinse, and even then the cans would be full of dirt...you'd have to shred them and rinse more....doesn't seem reasonable to me.) I don't think we are going to get to "peak metal" in the same way as peak oil--something like 20 percent of the earth's crust is aluminum compounds, and there's lots of iron and other stuff. And we aren't burning the metal up. But the economics will gradually push towards reuse. Most of the steelmaking in the US is just remelting, but I doubt that is true of the steel used in China, where the economy is at a different stage. Alan >on 9/1/06 6:04 PM, Alan Muller at amuller@no.address wrote: > >At 02:00 PM 9/1/2006 -0400, David Biddle wrote: >I just read an article and listened to a podcast >on Landfill Mining by a senior editor with Wired >magazine from July of this year. Very >interesting, especially since it is from the >perspective of a lay ?expert.? I thought it >might be a nice bookend to all this talk about landfill mining. > > >Interesting, but ultimately absurd--in my >opinion. I think this stuff could be harmful if >it serves to promote indiscriminate dumping as a sustainable activity. > >am > >"It is better to remain silent and be thought a >fool than to speak and remove all doubt." > > > >-- >David Biddle, Executive Director ><http://www.blueolives.blogspot.com> >Greater Philadelphia Commercial Recycling Council >P.O. Box 4037 >Philadelphia, PA 19118 > >215-247-3090 (desk) >215-432-8225 (cell) > ><<http://www.gpcrc.com>http://www.gpcrc.com> > >Read In Business magazine to learn about sustainable >businesses in communities across North America! >Go to: <http://www.jgpress.com/inbusine.htm> > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "GreenYes" group. To post to this group, send email to GreenYes@no.address To unsubscribe from this group, send email to GreenYes-unsubscribe@no.address For more options, visit this group at http://groups.google.com/group/GreenYes -~----------~----~----~----~------~----~------~--~--- |
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