========================================================================= Date: Wed, 12 Dec 2012 05:08:19 +0000 Reply-To: Radiocarbon Mailing List Sender: Radiocarbon Mailing List From: "Mcclure, Mark E - (mcclurem)" Subject: IntCal lab survey Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Dear Colleagues, As part of efforts to a) raise funds for on-going IntCal calibration curve = work and b) demonstrate the commercial value of that work, Paula Reimer and= I would like to make an estimate of the number of radiocarbon samples bein= g dated each year worldwide. To this end, we would be most grateful if tho= se running radiocarbon labs would be willing to answer the following questi= ons. 1) How many 14C samples of unknown age do you analyse each year by radiomet= ric methods (gas, LSC etc.)? 2) How many 14C samples of unknown age do you analyse each year by AMS? 3) Do you produce graphite for AMS analysis elsewhere? If so, how many sam= ples of unknown age do you process in this way each year? Please send answers to c.e.buck@sheffield.ac.uk by 21 Dec if possible. Esti= mates and guesstimates as well as exact figures could be useful, so long as= you make it clear which they are. Returns after 21 Dec will be useful for= b) above but not the immediate need for a) so please do send them as you a= re able to collate the info. In your email, please let us know which lab yo= u represent. We will not use this info in anything we make public, but we w= ant to be able to identify duplicate responses should they occur. Many thanks, Caitlin --=20 Prof Caitlin E. Buck Director of Postgraduate Research School of Mathematics and Statistics University of Sheffield Hicks Building Hounsfield Road Sheffield S3 7RH Tel: +44 114 222 3715 =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D To unsubscribe from this list, send the command SIGNOFF C14-L to LISTSERV@LISTSERV.ARIZONA.EDU, or send a request to C14-L-request@LISTSERV.ARIZONA.EDU.