I always wondered how chromium was only banned in the hexavalent state - not trivalent or elemental chromium.  I guess stainless steel was recognized as necessary.  But lead is most dangerous in the oxidized state - lead in pigments and tetraethyl lead in gasoline.  To my knowledge, elemental lead in bird shot is about the only harmful occurance, and there the lead is worn away and reacted by acids in the digestive system, to become an oxidized state.  

Would an intense electronics recycle program keep lead based solder around longer?  Seems to work for the car battery industry. 

Denny Fritz






-----Original Message-----
From: Mike Fenner <[log in to unmask]>
To: TechNet <[log in to unmask]>
Sent: Mon, Jul 25, 2011 5:51 am
Subject: Re: [TN] Lead Free solder has performed well...


With respect to Lead in electronics, there are few precedents for a logical
esponse to a logical campaign. 
All lead is bad, ban it" generally out weighs "Better, cheaper, safer,
eliable, keep it"
ere you to take up the cause you would most likely be dismissed as
nqualified and speaking for vested industrial interests.
uggest forgetting it and getting on with your life, which is what I now
ropose to do! 
)
Regards
Mike
-----Original Message-----
rom: TechNet [mailto:[log in to unmask]] On Behalf Of Gary Crowell
ent: Sunday, July 24, 2011 11:01 PM
o: [log in to unmask]
ubject: Re: [TN] Lead Free solder has performed well...
Ok, so here's the next question:  Can we go back?  Could there be a viable
arketing (and legislative) campaign based on something like:  "Responsible
ead Use:  Better Products, Better Safety, Better for the Environment!"
- 
---------------------------------------------
ary A. Crowell Sr., P.E., CID+
inkedin <http://www.linkedin.com/in/garyacrowellsr>
lance<http://www.linkedin.com/redirect?url=http%3A%2F%2Fgaryacrowellsr%2Eel
nce%2Ecom&urlhash=kJm9>
 KE7FIZ <http://www.arrl.org>

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