I got into the chamber about 11 am and exited at about 12:15. I took 8 samples (7 samples of large particles, 1 small of fine particulate) using the new collection kit, which worked well for the large particles. My overall impression is that this section of beamtube is not as "dirty" for large particulate as the HAM3-->HAM2 run: Large particles found in 3 sections in HAM9-->HAM8 vs multiple large particles found in all but one of the sections in the HAM3-->HAM2 run and less fine particulate on overhead nozzles in HAM9-->HAM8 vs lots of fine particulate (enough to show up on glove with light swipe)on overhead nozzles in HAM3-->HAM2. See pix below. The samples will be sent to CIT for characterization.

Robert was getting ready to go in just as I was coming out so we'll see what he finds.