The ICC crew brushed about 80% of the chamber today after completing the usual round of pre-work wipe and FTIR samples. Dust counts were rigorously monitored due to the close proximity of the chamber to the test stand/fiber-welding areas. Drills were troublesome today (5 used) and one indicator that drills are having trouble is higher than usual particle counts. We were in touch with the control room a couple of times to report particle spikes in the chamber so that the information could be correlated with the dust counts being collected in the LVEA and adjacent cleanrooms.