6th INTERNATIONAL WORKSHOP ON
ICE DRILLING TECHNOLOGY
September 17 - 23, 2006
US Fish and Wildlife Service
National Conservation Training Center
Shepherdstown, West Virginia, USA
This material is based on work supported by the National Science Foundation under an Interagency Agreement OPP-0552340 to the U. S. Geological Survey. Any opinions, findings, conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation.