The BNC facility is now open, but no hazardous gases may be used. There are unresolved issues with the Toxic Gas Monitoring System that caused the evacuation. As a result, until further notice all hazardous gases are shut off. Thank you for your understanding, John John R. Weaver Strategic Facilities Officer Birck Nanotechnology Center Purdue University jrweaver@purdue.edu<mailto:jrweaver@purdue.edu> nano.purdue.edu