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This is Volume 1 of NASA's Apollo 11 Technical Crew Debriefing, dated July 31, 1969. The Mission Operations Branch of the Flight Crew Support Division at the Manned Spacecraft Center in Houston prepared it, and it was originally classified Confidential. In it Armstrong, Aldrin and Collins go phase by phase through suiting, launch, powered flight, Earth orbit and lunar surface activities. They comment on suit fit, vibration, checklists, lunar dust, footing and poor sleeping conditions in the lunar module. A section titled Visual Sightings appears in the table of contents.
# CONFIDENTIAL problem in disentanglement. I don't know whether it's worth moving that tab or not. ## 10.38 BULK SAMPLE OPERATIONS The bulk sample took longer than in the simulations because the area where the bulk sample was collected was significantly farther from the MESA table than the way we had done it in training. The MESA table was in deep shadow and collecting samples in that area was far less desirable than collecting them out there in the sunlight where we could see what we were doing. In addition, we were farther from the exhaust plume and the contamination of the propellants. So I made a number of trips back and forth out in the sunlight and then carried the samples back over to the scale where the sample bag was mounted. I probably made 20 trips back and forth from sunlight to shade. It took a lot longer, but by doing it that way, I was able to pick up both a hard rock and ground mass in almost every scoopful. I tried to choose various types of hard rocks out there so that, if we never got to the documented sample, at least we would have a variety of types of hard rock in the bulk sample. ## CONFIDENTIAL
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