Sandia National Laboratories is conducting and directing the Multi- Well Experiment (MWX) core analysis program as part of the Western Gas Sands Project for the Department of Energy's Unconventional Gas Sands Program. Sandia National Laboratories will carry out sample selection , sample distribution , prioritization of analyses, distribution of data , and coordination of interagency analyses. The U.S.G.S., along with Sandia, will provide interpretation of analytical results . A sedimentological model of the Mesaverde Group at the multi-Well site will be published by J . C . Lorenze (Sandia).