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On Tue, 2 May 2017 19:03:31 +0100, "Ian Field"
wrote:



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On Mon, 1 May 2017 21:25:07 +0100, "Ian Field"
wrote:



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On Mon, 01 May 2017 15:08:31 +0700, John B Slocomb
wrote:

SNIPPED


The usually suggested preparation for welding or brazing galvanized
materials is to grind all the galvanizing off!

ACTUALLY, stripping the zinc with acid is much more effective.
Hydrochloric acid makes short work of zinc and produces zinc chloride,
which can be used as soldering flux - - -

Certainly better than the ****wit who suggested grinding it off and
breathing it as dust instead of fumes.

The steel would probably contaminate it, but it'd have some uses.

Zinc really isn't that toxic - its used in baby powder, hundreds of skin
lotions and winter defence vitamin supplements.

And no one is making all that much commotion about all the scrap zinc
batteries that ended up in landfill. The bogeyman most people think of
is
mercury.

That rots out the central nervous system.
And elemental mercury isn't the serious problem it'd made out to be
either - it's the organic compounds (which CAN form in disposal - if
the mercury combines with carbonaceous materials)

I thought it was something like a salt or sulphurous compound - but its a
long time since I read up on it.

And you're being awfully pedantic about the distinction between elements
and their organic compounds for someone with no grasp of etymology.
I have a good grasp of etymology. However, I also have a very good
knowlege of technical terminology and processes - which you obviously
do not - and the etymological derivation of a term is not always the
comonly used or technically correct definition.

Yes - I'm sure "common usage" is a perfectly good excuse.