BEJ236 10.3150/09-BEJ236 BEJ0903-002 16 Tightness for the Interface of Contact Process Enrique Andjel CMI Université de Provence enrique.andjel@cmi.univ-mrs.fr Thomas Mountford Ecole Polytechnique Fédérale de Lausanne thomas.mountford@epfl.ch Leandro P. R. Pimentel Delft University of Technology l.pintorodriguespimentel@tudelft.nl Daniel Valesin Ecole Polytechnique Fédérale de Lausanne valesin@gmail.com http://www.e-publications.org/ims/submission/index.php/BEJ/user/submissionFile/4798?confirm=745dd85b