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 > > > > > _________________________________________________________________ Get the best of MSN on your mobile http://clk.atdmt.com/UKM/go/147991039/direct/01/