What do you think the hydrogen runs are???
A possible source of contamination. At the very least they should have run the deuterium through a pristine purifier. Likewise they should have captured the purified deuterium and run it through the purifier again for several runs to see if the effect was maintained. Analysis of the gas before and after, likewise would have been helpful.
But not doing any of those checks and controls is why looking for nothing more than an anomalous effect and then running off to report it to an eager audience of crackpots is bad science. It's too bad NASA promotes and funds such activity in order to get some cheap attention.
Lordy, but you're getting desperate. Any reasonably experienced scientist, working with such a system, would do a series of runs, starting with hydrogen (or deuterium), and cycling through a time series of compressions and extractions as the gas changes from one state to the other, until the system re-equilibrates under the new conditions.
"But not doing any of those checks and controls is why looking for nothing more than an anomalous effect and then running off to report it to an eager audience of crackpots is bad science. It's too bad NASA promotes and funds such activity in order to get some cheap attention.
More desperation. These are slides from a talk, which, as with any such, hits the high points, and leaves out much of the gory detail. There "is" a NASA report, which I assume can be gotten from NASA. I'm not sure if that only covers the 1989 work, or if it includes both the 1989 and the 2009 work, and very likely includes those gory details. I am probably going to see if I can get a copy.