BNC is All Clear - You may re-enter the building. The leak was found and the system purged, so the facility is now safe for reentry. A special thanks goes to John Coy, Steve Jurss, Dave Lubelski, and the Purdue Fire Department for donning air packs and fixing the problem. John Weaver John R. Weaver Facility Manager Birck Nanotechnology Center Purdue University (765) 494-5494 jrweaver@purdue.edu