To add to the 'wrong list' - I've seen 'mt' being used for 'metre' (in Portugal
and Spain)
> From: j...@frewston.plus.com
> To: usma@colostate.edu
> Subject: [USMA:45903] Re: Greenhouse Gas Reporting
> Date: Sat, 26 Sep 2009 16:33:35 +0100
>
>
> I have seen mt used as an abreviation of 'metric tonne' Still wrong.
>
> John F-L
>
>
> ----- Original Message -----
> From: "Bill Hooper" <hooperb...@bellsouth.net>
> To: "U.S. Metric Association" <usma@colostate.edu>
> Sent: Saturday, September 26, 2009 3:58 PM
> Subject: [USMA:45901] Re: Greenhouse Gas Reporting
>
>
> >
> >
> > On Sep 26 , at 9:16 AM, Jason D Darfus wrote,
> > regarding reports on emissions of greenhouse gases:
> >> The symbol mt (militon) is the same as a kilogram and could possibly
> >> be interpreted as such (oops!)
> >
> > Quite right!
> >
> > Actually, it not only COULD be, but actually SHOULD be interpreted to
> > mean "millitonne" since the SI symbol for tonne is "t" and the SI
> > prefix "m" means "milli-" or one-thousandth. Thus, the maverick "mt"
> > really does mean a kilogram (not the million kilograms the authors
> > apparently meant).
> >
> > Made up symbols that uninformed people invent willy-nilly to suit
> > narrow, specific purposes can always be misinterpreted and can be
> > misinterpreted in many different ways (sometimes in ways that are more
> > SI correct than the intended meaning). That is why they should not be
> > used.
> >
> > That's the whole point of objecting to "mt" as a symbol in this case.
> > There is a proper name and symbol for everything in SI and it should
> > be used. In SI, the symbol for million tonnes is Mt (not mt) and the
> > version expressed in kilograms is gigigram, whose symbol is "Gg". In
> > no case should the unit symbol be appended with CO2e or any other
> > qualifiers.
> >
> >
> > Bill Hooper
> > "72 millitonnes body mass" (ha, ha!)
> > Fernandina Beach, Florida, USA
> >
> >
>
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