Mary Tang mtang at
Fri Jul 5 17:25:51 PDT 2002

A labmember processed glass wafers (which contain 5-7% sodium and trace
metals) through both wbnonmetal (4 pm) and wbdiff (4:30 pm) on July 2.
The problem was not discovered until later.  Both benches were
decontaminated the evening of July 3.


Mary X. Tang, Ph.D.
National Nanofabrication Users' Network
Stanford Nanofabrication Facility
CIS Room 136, Mail Code 4070
Stanford, CA  94305
mtang at

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