In addition to the other AMS services already sent to the list, there are
a number of satellite laboratories that prepare targets to send to the
actual AMS facilities.  My understanding is that the bottleneck at most
AMS facilities (in some cases running many months) is the sample
preparation time, not the analysis of the graphite.  You can get around
this bottleneck by having the sample prepared at one of these satellite
laboratories and then having the graphite shipped to an AMS facility.

To toot our own horn a bit, the U. of Minnesota LRC offers this service
(for paleo samples only), and I know there are other labs that do this as
well. I suggest you do a general search on the web and follow some web
links (e.g. http://www2.waikato.ac.nz/c14/webinfo/www.html). For our lab
here, check:

http://lrc.geo.umn.edu/services/ams/

    _/     _/_/_/    _/_/  Dr. Brian J. Haskell         Tel:(612) 624-7005
   _/     _/   _/  _/   _/ Limnological Research Center Tel:(612) 378-3242
  _/     _/_/_/   _/       University of Minnesota      Fax:(612) 625-3819
 _/     _/   _/  _/   _/   310 Pillsbury Drive. S.E.    http://lrc.geo.umn
_/_/_/ _/    _/   _/_/     Minneapolis, MN 55455-0219   .edu/people/haskell