In the Province of Ontario , in order to renew your licence every year, you
must sign off as to having an amalgam separator that exceeds the ISO
standard of 95% mercury capture in order to get the licence (most separators
actually exceed this...mine is actually 97 or 98% capture as I recall).  If
you do not place or remove amalgams, then you don't have to have one (like
an orthodontic or oral radiology practice).  This has been in place for over
5 years in Ontario.  There are over 8000 licenced dentists and specialists
in Ontario, which accounts for about 40% of Canada.  Costs about $1K to
install, cartridges about $400 each, and in my office, I need about 2 a
year.  Not all juristictions are on board yet (which the article is
indirectly pointing out), just as not all States are, but all will be soon
or else governments will legislate it.  And who wants the government to get
more involved in our lives?:

http://www.missoulian.com/articles/2008/03/21/news/local/znews01.txt

Better to be proactive.

John