michael.rodruck@LIGO.ORG - posted 16:20, Friday 18 November 2011 (1760)
Ops Day Summary
Final day of NSF review (and free food)
HEPA fans installed on cleanroom at EX, alongside cleaning of VEA by Terry, Karen, and Cris. Very high dust counts (~50,000 at 0.3) during this time, but I'm not sure what the cause was. Thought it might be vacuuming but even after they stopped using them we still had high counts. There was lots of craning activity going on at the same time, so maybe a combination of all of those.