Standing in front of the encasement mockup are, from left, Dianne van der Reyden, director for preservation and charged with oversight of the project; Nels Olson, former project technical administrator; Elmer Eusman, special assistant and the Library's project manager; Mark Luce, NIST project manager in charge of production; Jay Hendricks, NIST project leader in charge of sealing and leak testing; John Hébert, chief of the Geography and Map Division and responsible for project-funding oversight; and Jay Brandenburg, NIST design engineer and chief designer for the project. Members of the group hold several pieces of one corner of an encasement model, which is built to scale. - Dianne Vogt-O'Connor