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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.
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## CONFIDENTIAL ## 6.7 CHLORINATE POTABLE WATER ARMSTRONG We did this once a day before bedtime. The little injector assembly got more and more difficult to operate as each day went by. The chlorine tends to stick and corrode the screw threads. What started out to be a fairly low torque application, towards the eighth day got to be a fairly difficult task to screw the container down so that the chlorine capsule in it would get squashed. We also got some leakage the first day due to the fact that I did not have the threads fully engaged. It felt to me as if I did have the threads engaged. However, when I started screwing it down, I found I didn't. Chlorine was escaping, and I had to get the towel out and mop it up. After that, I didn't have any trouble with it. ALDRIN I found myself invariably wanting a drink of water after we chlorinated the water. You couldn't do that unless you put some in the bag ahead of time. We should have done that. It just didn't occur to us until afterward. COLLINS I certainly don't think it's worth changing the system for mainline Apollo. For future spacecraft, you'd certainly like some built-in way of assuring yourself of a germ-free water supply without having to go through this kind of procedure. ## CONFIDENTIAL
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