Re: Daguerreotypes

Mac Cosgrove-Davies (MCOSGROVEDAVIES@worldbank.org)
Wed, 24 Apr 1996 01:30:43 +0000 (GMT)

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If the fume hood will be used solely for venting mercury
vapor, perhaps the exhaust pipe should have a downward slope
rather than the conventional updraft design.

Mac Cosgrove-Davies

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