The BNC Cleanroom will be shut down on TUESDAY, 11/28/06, for preventive maintenance activities. These will include the makeup air unit (MAU), the solvent exhaust, and the scrubbed exhaust systems. These systems require a twice-yearly shut down to perform various tasks to keep them operational. Activities - and therefore the shutdown - will begin at 6:30 AM and should be completed by 5:30 PM. Any deviation from that schedule will be communicated via e-mail to BNC-All, but no deviation is expected. Barring unforeseen circumstances, the cleanroom will reopen at 5:30 PM. Please plan your schedules accordingly. Thanks, John Weaver John R. Weaver Facility Manager Birck Nanotechnology Center Purdue University (765) 494-5494 jrweaver@purdue.edu